prov:value
| - , carboalkoxy, carboxy, carboxamido, cyano, and Q.sup.b; A is a bond or (CH(R.sup.15)).sub.pa --(W.sup.7).sub.rr wherein rr is 0 or 1, pa is an integer selected from 0 through 3, and W.sup.7 is N(R.sup.7); R.sup.7 is hydrido or alkyl; R.sup.15 is selected from the group consisting of hydrido, halo, alkyl,and haloalkyl; X.sup.0 is selected from the group consisting of hydrido, alkyl, halo, haloalky
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