/usr/share/avogadro/fragments/amino_acids/D-histidine.cml is in avogadro-data 1.0.3-1ubuntu4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 | <?xml version="1.0" encoding="UTF-8"?>
<molecule xmlns="http://www.xml-cml.org/schema"
xmlns:cml="http://www.xml-cml.org/dict/cml"
xmlns:units="http://www.xml-cml.org/units/units"
xmlns:xsd="http://www.w3c.org/2001/XMLSchema"
xmlns:iupac="http://www.iupac.org"
id="CS_2R-2-amino-3-3H-imidazol-4-yl_propanoic_acid">
<formula concise=" C 6 H 9 N 3 O 2 "/>
<identifier convention="iupac:inchi" value="1/C6H9N3O2/c7-5(6(10)11)1-4-2-8-3-9-4/h2-3,5H,1,7H2,(H,8,9)(H,10,11)/t5-/m1/s1"/>
<name convention="IUPAC">(2R)-2-Amino-3-(3H-imidazol-4-yl)propanoic acid</name>
<atomArray>
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<bondArray>
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<bond atomRefs2="a7 a8" order="1"/>
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<bond atomRefs2="a1 a15" order="2"/>
<bond atomRefs2="a16 a20" order="1"/>
</bondArray>
<propertyList>
<property dictRef="cml:molwt" title="Molecular weight">
<scalar dataType="xsd:double" dictRef="cml:molwt" units="units:g">155.1546</scalar>
</property>
<property dictRef="cml:monoisotopicwt" title="Monoisotopic weight">
<scalar dataType="xsd:double" dictRef="cml:monoisotopicwt" units="units:g">155.0694765</scalar>
</property>
</propertyList>
</molecule>
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