Patent ID: 7235585

Claim:
A compound of the formula: wherein: R N is independently C 1-7 alkyl; X 1 is independently —I, —Br, or —Cl; X 2 is independently —I, —Br, or —Cl; the group —N(CH 2 CH 2 X 1 )(CH 2 CH 2 X 2 ) is independently attached at the 2-position or at the 4-position; each R G is independently —H or an ester substituent; n is independently an integer from 0 to 4; each R P , if present, is independently a phenyl substituent; m is independently an integer from 0 to 4; each R M , if present, is independently a mustard substituent; and pharmaceutically acceptable salts, solvates, amides, and esters thereof.