IUPAC:methyl (1R,15R,18R)-17-ethyl-3,13-diazapentacyclo[13.3.1.0^{2,10}.0^{4,9}.0^{13,18}]nonadeca-2(10),4,6,8,16-pentaene-1-carboxylate; sulfuric acid
IUPAC:methyl (1R,15R,18R)-17-ethyl-3,13-diazapentacyclo[13.3.1.0^{2,10}.0^{4,9}.0^{13,18}]nonadeca-2(10),4,6,8,16-pentaene-1-carboxylate; sulfuric acid