A compound of formula (I): ##STR00001## Each of R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.4', R.sub.5, R.sub.6, R.sub.7, R.sub.11, R.sub.12, R.sub.15, R.sub.16, and R.sub.17, independently, is hydrogen, halo, alkyl, haloalkyl, hydroxy, amino, carboxyl, oxo, sulfonic acid, or alkyl that is optionally inserted with --NH--, --N(alkyl)--, --O--, --S--, --SO--, --SO.sub.2--, --O--SO.sub.2--, --SO.sub.2--O--, --SO.sub.3--O--, --CO--, --CO--O--, --O--CO--, --CO--NR'--, or --NR'--CO--; or R.sub.3 and R.sub.4 together, R.sub.4 and R.sub.5 together, R.sub.5 and R.sub.6 together, or R.sub.6 and R.sub.7 together are eliminated so that a C.dbd.C bond is formed between the carbons to which they are attached; each of R.sub.8, R.sub.9, R.sub.10, R.sub.13, and R.sub.14, independently, is hydrogen, halo, alkyl, haloalkyl, hydroxyalkyl, alkoxy, hydroxy, or amino; n is 0, 1, or 2; A is alkylene, alkenylene, or alkynylene; and each of X, Y, and Z, independently, is alkyl, haloalkyl, --OR', --SR', --NR'R'', --N(OR')R'', or --N(SR')R''; or X and Y together are .dbd.O, .dbd.S, or .dbd.NR'; wherein each of R' and R'', independently, is hydrogen, alkyl, or haloalkyl.
CROSS REFERENCE TO RELATED APPLICATION
Pursuant to 35 U.S.C. .sctn.119(e), this application claims the benefit of prior U.S. provisional application 60/288,643, filed May 3, 2001.
