5-methyl-2,5-diazatetracyclo[13.4.0.0^{2,7}.0^{8,13}]nonadeca-1(15),8(13),9,11,16,18-hexaene hydrochloride
5-methyl-2,5-diazatetracyclo[13.4.0.02,7.08,13]nonadeca-1(19),8,10,12,15,17-hexaene hydrochloride
5-methyl-2,5-diazatetracyclo[13.4.0.0^{2,7}.0^{8,13}]nonadeca-1(15),8,10,12,16,18-hexaene hydrochloride
5-methyl-2,5-diazatetracyclo[13.4.0.02,7.08,13]nonadeca-1(15),8(13),9,11,16,18-hexaene hydrochloride