prov:value
| - In the present invention 6, there is provided a thermosetting resin in which, in ???X??? in the formula (17), R1, R2, R3, R7 and R8 may be the same or different and are a halogen atom, an alkyl group having 6 or less carbon atoms or a phenyl group, R4, R5 and R6 may be the same or different and are a hydrogen atom, a halogen atom, an alkyl group having 6 or less carbon atoms or a phenyl group and
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