prov:value
| - Examples of the substituent for the substituted phenyl group shown by A are an alkyl group (preferably, an alkyl group having 1 to 4 carbon atoms, e.g., a methyl group, an ethyl group, etc.), an alkoxy group (preferably, an alkoxy group having 1 to 4 carbon atoms, e.g., a methoxy group, an ethoxy group, etc.), a nitro group, a halogen atom (e.g., a chlorine atom, etc.), an alkoxycarbonyl group (in
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