| http://www.w3.org/ns/prov#value | - CH2???C(R1)COO(R3O)nR4???(2) wherein R1 is a hydrogen atom or an alkyl group having 1 to 5 carbon atoms; R3 is a divalent hydrocarbon group having 1 to 30 carbon atoms, which may have a heteroatom; R4 is hydrogen atom or a monovalent hydrocarbon group having 1 to 30 carbon atoms, which may have a heteroatom; and n is a number of 1 to 60.
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