| http://www.w3.org/ns/prov#value | - each represent an integer of 1 to 3, and n4 is an integer of 0 to 6, ##STR19## wherein Y represents a sulfur atom, a selenium atom, an oxygen atom, a nitrogen atom or a group --N(R11)--, wherein R11 represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, R10 represents a group having the same definition as the group represented by R8 in Formula Fc, or an aryl group, substituted wi
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