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<root>

    <cml:dchem>
        <cml:molecule>
            <cml:atom n="2">H</cml:atom>
            <cml:atom>O</cml:atom>
        </cml:molecule>
    </cml:dchem>

    <cml:dchem>
        <cml:reaction>
            <cml:molecule n="2">
                <cml:atom n="2"> H </cml:atom>
                <cml:caption> hydrogen </cml:caption>
            </cml:molecule>
            <cml:plus/>
            <cml:molecule>
                <cml:atom n="2"> O </cml:atom>
                <cml:caption> oxygen </cml:caption>
            </cml:molecule>
            <cml:gives>
                <cml:caption> hefty </cml:caption>
            </cml:gives>
            <cml:molecule n="2">
                <cml:atom n="2"> H </cml:atom>
                <cml:atom> O </cml:atom>
                <cml:caption> water </cml:caption>
            </cml:molecule>
        </cml:reaction>
    </cml:dchem>

    <cml:dchem>
        <cml:reaction>
            <cml:atom n="2"> O </cml:atom>
        </cml:reaction>
    </cml:dchem>

    <cml:dchem>
        <cml:reaction>
            <cml:molecule n="2">
                <cml:atom n="2"> H </cml:atom>
            </cml:molecule>
            <cml:plus/>
            <cml:molecule>
                <cml:atom n="2"> O </cml:atom>
            </cml:molecule>
            <cml:gives/>
            <cml:molecule n="2">
                <cml:atom n="2"> H </cml:atom>
                <cml:atom> O </cml:atom>
            </cml:molecule>
        </cml:reaction>
    </cml:dchem>

    <cml:dchem>
        <cml:atom n="6" charge="-5" weight="652" protons="339"> Rx </cml:atom>
    </cml:dchem>

    <cml:dchem> <cml:molecule n="2">
        <cml:ion charge="+2"> <cml:atom n="2"> H </cml:atom> </cml:ion>
        <cml:ion charge="-2"> <cml:atom>       O </cml:atom> </cml:ion>
    </cml:molecule> </cml:dchem>

    <cml:dchem>
        <cml:ion charge="-1">
            <cml:atom> C </cml:atom>
            <cml:atom> O </cml:atom>
            <cml:atom> O </cml:atom>
            <cml:atom> H </cml:atom>
        </cml:ion>
    </cml:dchem>

    <cml:dchem>
        <cml:ion charge="-1" alternative='b'>
            <cml:atom> C </cml:atom>
            <cml:atom> O </cml:atom>
            <cml:atom> O </cml:atom>
            <cml:atom> H </cml:atom>
        </cml:ion>
    </cml:dchem>

    <cml:dchem>
        <?chemml ion alternative b?>
        <cml:ion charge="-1">
            <cml:atom> C </cml:atom>
            <cml:atom> O </cml:atom>
            <cml:atom> O </cml:atom>
            <cml:atom> H </cml:atom>
        </cml:ion>
    </cml:dchem>

    <cml:dchem>
        <cml:reaction>
            <cml:molecule n="2">
                <cml:atom n="2"> H </cml:atom>
            </cml:molecule>
            <cml:plus/>
            <cml:molecule>
                <cml:atom n="2"> O </cml:atom>
            </cml:molecule>
            <cml:equilibrium/>
            <cml:molecule n="2">
                <cml:atom n="2"> H </cml:atom>
                <cml:atom>       O </cml:atom>
            </cml:molecule>
            <cml:gives>
                <cml:caption> wet feet </cml:caption>
            </cml:gives>
            <cml:molecule n="2">
                <cml:atom n="2"> H </cml:atom>
                <cml:atom>       O </cml:atom>
            </cml:molecule>
        </cml:reaction>
    </cml:dchem>

    <cml:dchem>
        <cml:reaction>
            <cml:gives>
            </cml:gives>
            <cml:gives>
                <cml:caption>first entry</cml:caption>
            </cml:gives>
            <cml:gives>
              <cml:caption>first entry</cml:caption>
              <cml:caption>second entry</cml:caption>
            </cml:gives>
            <cml:gives/>
        </cml:reaction>
    </cml:dchem>

    <cml:dchem>
        <cml:molecule>
            <cml:atom> H </cml:atom>
            <cml:singlebond/>
            <cml:atom> C </cml:atom>
            <cml:doublebond/>
            <cml:atom> C </cml:atom>
            <cml:singlebond/>
            <cml:atom> H </cml:atom>
        </cml:molecule>
    </cml:dchem>

    <cml:dchem>
        <cml:molecule>
            <cml:atom> H </cml:atom>
            <cml:bond n="1"/>
            <cml:atom> C </cml:atom>
            <cml:bond n="2"/>
            <cml:atom> C </cml:atom>
            <cml:bond n="1"/>
            <cml:atom> H </cml:atom>
        </cml:molecule>
    </cml:dchem>

    <cml:dchem>
        <cml:structure>
            <cml:component>
                <cml:graphic>SIX,B</cml:graphic>
                <cml:graphic>r135</cml:graphic>
            </cml:component>
            <cml:component>
                <cml:graphic>R246</cml:graphic>
            </cml:component>
            <cml:component>
                <cml:graphic>RZ</cml:graphic>
                <cml:text>A,B,C,D,E,F</cml:text>
            </cml:component>
        </cml:structure>
    </cml:dchem>

    <cml:dchem>
        <cml:structure>
            <cml:component>
                <cml:graphic>SIX,B</cml:graphic>
                <cml:graphic>R135</cml:graphic>
            </cml:component>
            <cml:component>
                <cml:graphic>R246</cml:graphic>
            </cml:component>
            <cml:component>
                <cml:graphic>RZ</cml:graphic>
                <cml:text>A,B,C,D,E,F</cml:text>
            </cml:component>
            <cml:component>
                <cml:graphic>Z</cml:graphic>
                <cml:oxidation n="3">A</cml:oxidation>
                <cml:annotation location="tl">
                    <cml:text>B</cml:text>
                    <cml:caption>x</cml:caption>
                </cml:annotation>
                <cml:oxidation n="3" sign="+">C</cml:oxidation>
                <cml:text>D,E,F</cml:text>
            </cml:component>
        </cml:structure>
        <cml:structure>
            <cml:component>
                <cml:graphic>SIX,B</cml:graphic>
                <cml:graphic>r135</cml:graphic>
            </cml:component>
            <cml:component>
                <cml:graphic>R246</cml:graphic>
            </cml:component>
            <cml:component>
                <cml:graphic>RZ</cml:graphic>
                <cml:text>A,B,C,D,E,F</cml:text>
            </cml:component>
        </cml:structure>
    </cml:dchem>

</root>