2-((5-Amino-1-(chloromethyl)-1,2-dihydro-3H-benzo[e]indol-3-yl)carbonyl)-1H-indol-5-ylamine 3-((5-Amino-1H-indol-2-yl)carbonyl)-1-(chloromethyl)-2,3-dihydro-1H-benzo[e]indol-5-amine AIDS-151814 AIDS151814 NSC693542