| http://www.w3.org/ns/prov#value | - CH2 ═C(R3)--C(O)--O--(R4 O)m --(C6 H4)--R5 where R3 is a hydrogen atom or a methyl group; R4 is an alkylene group having 2 to 6 carbon atoms; R5 is a hydrogen atom or an alkyl group having 1 to 12 carbon atoms; and m is an integer from 0 to 12, preferably from 1 to 8.
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