(2,2'-Bi-1H-indene)-1,1',3,3'(2H,2'H)-tetrone, 2,2'-bis(4-(bis(2-chloroethyl)amino)phenyl)- 2,2'-Bis(4-(bis(2-chloroethyl)amino)phenyl)-(2,2'-Bi-1H-indene)-1,1',3,3'(2H,2'H)-tetrone 2,2-Bis((4-bis(2-chloroethyl)aminophenyl)indane-1,3-dione) DU2988397