prov:value
| - p including carbonyl group, alkylene group including carboxyl group, or alkylene group including carbamoyl group. [0038] Further, R3 is also a polyvalent group selected from the groups shown by the following General Formulas (3), (4), and (5). [0039] In the General Formula (3), R4 is hydrogen atom, or alkyl group of number of carbons 1-4 such as methyl group, ethyl group, propyl group, butyl group
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