. . ")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" . .