3-(Chloromethyl)-6-(hydroxyamino)-1-((5,6,7-trimethoxy-1H-indol-2-yl)carbonyl)indoline AIDS-150655 AIDS150655 N-(3-(Chloromethyl)-1-((5,6,7-trimethoxy-1H-indol-2-yl)carbonyl)-2,3-dihydro-1H-indol-6-yl)hydroxylamine NSC688303