Synonyms: C-Curarine I;18,18'-Dideoxy-2,2'-epoxytoxiferine I;C-Curarin I;C-Curarine (8CI);C-Curarine-I;Toxiferine I, 18,18'-dideoxy-2,2'-epoxy- (9CI);(1R,9R,11R,13S,15S,16S,19R,29S,30E,32S,35S,38E)-30,38-diethylidene-16,32-dimethyl-10-oxa-8,26-diaza-16,32-diazoniadodecacyclo[27.5.2.2~13,16~.1~8,12~.0~1,9~.0~2,7~.0~9,28~.0~11,19~.0~11,26~.0~15,19~.0~20,25~.0~32,35~]nonatriaconta-2,4,6,12(39),20,22,24,27-octaene (non-preferred name);(30Z,38E)-30,38-diethylidene-16,32-dimethyl-10-oxa-8,26-diaza-16,32-diazoniadodecacyclo[27.5.2.213,16.18,12.01,9.02,7.09,28.011,19.011,26.015,19.020,25.032,35]nonatriaconta-2,4,6,12(39),20,22,24,27-octaene (non-preferred name)