| 摘要 |
The present invention provides a polymer containing a structural unit represented by the formula (Ia) or (Ib): wherein R1, R2, R3, n, Z1, R4, R5 and m are defined in the specification, a structural unit represented by the formula (II): wherein R6, R7, R8, R9, Z2, n′ and Z′ are defined in the specification, and a structural unit represented by the formula (III): wherein R10, R11, 1′ and Z3 are defined in the specification.
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