| http://www.w3.org/ns/prov#value | - ???C6 alkoxy, ???OC(O)R16, ???COR14, hydroxy(C1???C6)alkyl, (C1???C6)alkoxy(C1???C6)alkyl, NO2, ???S(O)0-2R16, ???SO2NR14R15 and ???(C1???C6 alkylene)COOR14; when R2 is a substituent on a heterocycloalkyl ring, R2 is as defined, or is ???O or
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