1,3-Bis(2-(((S)-1-(chloromethyl)-1,6-dihydro-5-hydroxy-8-methylbenzo(1,2-b:4,3-b')dipyrrol-3(2H)-yl)carbonyl)indol-5-yl)urea 129655-21-6 BIZELESIN Benzo(1,2-b:4,3-b')dipyrrol-4-ol, 6,6'-(carbonylbis(imino-1H-indole-5,2-diylcarbonyl))bis(8-(chloromethyl)-3,6,7,8-tetrahydro-1-methyl-, (S-(R*,R*))- Bizelesin [USAN:INN] U-77,779