prov:value
| - , each of which is unsubstituted or substituted by an alkyl group having a carbon number of 1-4, an alkoxy group having a carbon number of 1-4, an alkylthio group having a carbon number of 1-4, a hydroxyl group, a halogen atom, an amino group, an alkylamino group having a carbon number of 1-4 or a di(alkyl having a carbon number of 1-4)-amino group; R7, R8, R9, R10, and R11 are a hydrogen atom, a
|