prov:value
| - zed; R2 is selected from the group C1-4 alkyl, C3-8 cycloalkyl, C2-4 alkenyl, and C2-4 alkynyl and is substituted with 0-3 substituents selected from the group ???CN, hydroxy, halo and C1-4 alkoxy; alternatively R2, in the case where X is a bond, is selected from the group ???CN, CF3 and C2F5; R7 and R8 are independently selected at each occurrence from the group H, Br, Cl, F, I, ???CN, C1-4 alkyl
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