Synonyms: Hazuntiphylline;22a,23b-Epoxy-2H,11H,14H,22aH,23H,23bH-bisoxireno[6,7]indolizino[1,8-fg:1',8'-f'g'][1,5]diazocino[3,2,1-jk:7,6,5-j'k']dicarbazole,12a,24a-diethyl-1a,3a,4,5,11a,12,12a,12b,13a,15a,16,17,23a,24,24a,24b-hexadecahydro-,[1aR-(1aa,3aa,5aR*,11aa,12aa,12ba,13aa,15aa,17aR*,22ab,23aa,23bb,24aa,24ba)]-; [1aR-(1aa,3aa,5aR*,11aa,12aa,12ba,13aa,15aa,17aR*,22ab,23aa,23bb,24aa,24ba)]-12a,24a-Diethyl-1a,3a,4,5,11a,12,12a,12b,13a,15a,16,17,23a,24,24a,24b-hexadecahydro-22a,23b-epoxy-2H,11H,14H,22aH,23H,23bH-bisoxireno[6,7]indolizino[1,8-fg:1',8'-f'g'][1,5]diazocino[3,2,1-jk:7,6,5-j'k']dicarbazole