with the proviso that at least one of RA1, RB1, R1, or R2 is other than hydrogen; and with the further proviso that when RA1 and RB1 form a fused benzene ring unsubstituted or substituted with chloro, and R1 is hydrogen, then R2 is other than phenyl or phenyl substituted with methyl, methoxy, chloro, or fluoro;