prov:value
| - wherein R12, R13, R14, R15, R16 and R17 are independently hydrogen, alkyl, halogen, ether, thioether, carboyl derivatives, hydroxyl, fluoroalkyl, amino, substituted amino, Y is ???(CH2)n??? where n is an integer from 1-4, O, S, NR (where R=H or alkyl), (???R101R102)n??? where n is an integer from 1-4 and R101 and R102 are independently hydrogen, lower alky, or substituted lower alkyl and Z is ???(
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