16908-75-1 21448-82-8 4049-18-7 Azirino(2',3':3,4)pyrrolo(1,2-a)indole-4,7-dione, 1,1a,2,8,8a,8b-hexahydro-1,5-dimethyl-8a-hydroxy-8-(hydroxymethyl)-6-(methylamino)-, 8-carbamate