| http://www.w3.org/ns/prov#value | - wherein R1 is a group represented by the formula: ???Y1???Y2???Y3???Ra wherein Y1 is single bond; Y2 is ???C(???O)???NRb???; Y3 is single bond or optionally substituted alkylene; Ra is optionally substituted carbocyclic group or optionally substituted heterocyclic group; Rb is hydrogen;
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