| http://www.w3.org/ns/prov#value | - In formula (II-1) or (II-2), a case wherein X is a hydrogen atom and Y2 is an acyl group, an alkylsulfonyl group, a phosphoryl group or a phophonyl group, or a case wherein X is a hydrogen atom and Y3 is a divalent acyl group, a divalent phosphoryl group or a divalent phosphonyl group is preferred, and a case wherein X is a hydrogen atom and Y2 is an alkylsulfonyl group, or a case wherein X is a h
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