prov:value
| - (a) H, C1-C12 alkyl, (CH2)nOH, COOR, SO2R, OR1, Cl, phenyl, C(W)R7, NHCOR, NR2, phenyl, provided R is H or C1-C12 alkyl, R1 is H or C1-C12 alkyl, n is an integer ranging from about 2 to about 8, R7 is C1-C12 alkyl, phenyl or phenalkyl and W is O or S; (b) A-V-B, [V-B]i, V where
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