148717-88-8 1H,5H-5a,12b-(Iminoethano)pyrrolizino(1,2-b)carbazol-14-one, 2,3,6,11,12,12a-hexahydro-1,12,12-trimethyl-, (1R-(1alpha,5abeta,12abeta,12bbeta))- VM 55599 VM-55599