4-methyl-4-azatetracyclo[13.4.0.02,7.08,13]nonadeca-1(19),2(7),8(13),9,11,15,17-heptaene
4-methyl-4-azatetracyclo[13.4.0.02,7.08,13]nonadeca-1(15),2(7),8(13),9,11,16,18-heptaene
4-methyl-4-azatetracyclo[13.4.0.0²,⁷.0⁸,¹³]nonadeca-1(15),2(7),8(13),9,11,16,18-heptaene