The molecule is a monoterpenoid indole alkaloid with formula C21H22N2O2, originally isolated from the seeds of Strychnos nux-vomica. It has a role as a plant metabolite and an antineoplastic agent. It is a monoterpenoid indole alkaloid, an organic heterohexacyclic compound, a delta-lactam, a tertiary amino compound, an olefinic compound and a primary alcohol.
(1R,13S,14E,19S,21S)-14-(2-hydroxyethylidene)-8,16-diazahexacyclo[11.5.2.11,8.02,7.016,19.012,21]henicosa-2,4,6,11-tetraen-9-one