prov:value
| - Z is preferably an alkyl group having 1 to 12 carbon atoms, more preferably an alkyl group having 1 to 6 carbon atoms, further preferably an alkyl group having 1 to 3 carbon atoms. [0065] In the formula (I), L1 is a divalent linking group selected from the group consisting of ???O???, ???CO???, ???S???, ???NH???, an alkylene group, an alkenylene group, an alkynylene group, an arylene group and a c
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