| http://www.w3.org/ns/prov#value | - wherein R1 is a radical forming residue of a reverse addition fragmentation transfer agent or free radical initiator, A is a chemical binding unit block, B is a hydrophilic unit block, m is 1 to 10,000, n is 1 to 10,000, p and q are natural numbers, and R2 is a thio carbonyl thio group.
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