prov:value
| - onally substituted by 1-5 radicals of alkyl, halo, haloalkyl, cyano, azido, nitro, amidino, R19???Z19??? or R19???Z19-alkyl; provided that the total number of aryl and heteroaryl radicals in R3 is 1-3; and provided when Y is ???C(O)???NR3R4, R3 is other than a phenyl or naphthyl having an amino, nitro, cyano, carboxy or alkoxycarbonyl substituent bonded to the ring carbon atom adjacent to the ring
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