2-(5-Ethyl-10-methyl-11-oxo-10,11-dihydro-5H-4,5,6,10-tetraaza-dibenzo[a,d]cyclohepten-7-yl)-imidazole-1-sulfonic acid dimethylamide

5,11-dihydro-11-ethyl-5-methyl-2-<1-(N,N-dimethylsulfonamido)-5-imidazolyl>-6H-dipyrido<3,2-b:2',3'-e><1,4>diazepin-6-one

[4-(5-Ethyl-10-methyl-11-oxo-10,11-dihydro-5H-4,5,6,10-tetraaza-dibenzo[a,d]cyclohepten-7-yl)-phenyl]-carbamic acid tert-butyl ester