prov:value
| - when Y is ???C(R40)(R45)??? and Q is a bond or ???C(R26)(R46)???, Z may be CO2H or CO2alkyl; [0033] R1 is the same or different and is selected from hydrogen, halogen, cyano, alkyl, substituted alkyl, alkenyl, substituted alkenyl, alkynyl, substituted alkynyl, O???R7, ???(C???O)R7, ???(C???O)???O???R7, NR8R9, ???(C???O)NR8R9, ???SR20, ???S(???O)R20, ???SO2R20 and ???C???C???Si(OH3)3; [0034] R2 is
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