4,8-Ethenobenzo[1,2-c:4,5-c']dipyrrole-1,3,5,7(2H,6H)-tetrone, 3a,4,4a,7a,8,8a-hexahydro-2,6-bis[(4-methyl-1-piperazinyl)methyl]-, dihydrochloride 4,8-Ethenobenzo[1,2-c:4,5-c']dipyrrole-1,3,5,7(2H,6H)-tetrone, 3a,4,4a,7a,8,8a-hexahydro-2,6-bis[(4-methylpiperazin-1-yl)methyl]-, dihydrochloride NSC376597