prov:value
| - In formula 5, R11 represents a methyl group, X represents an oxygen atom, a sulfur atom or ???N(R12)???, m represents an integer of 1 to 6, n represents an integer of 2 or 3, and R12 represents a hydrogen atom or an alkyl group having a carbon number of 1 to 4, such as methyl group, ethyl group, propyl group or butyl group, preferably a hydrogen atom or a methyl group.
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