prov:value
| - phenyl group being optionally substituted by 1 to 3 groups selected from the group consisting of a halogen atom, a C1 -C4 alkyl group, a C1 -C4 alkoxy group and an amino group, or (c) in the formula (A-3), R8 is a hydrogen atom or a C1 -C4 alkyl group, R9 is a C1 -C4 alkyl group or a C1 -C4 alkoxy group, and p is 0, 1 or 2,and R1, R2, R3, R4, R5 and R6 in the Ar are the same ones as those defined
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