The molecule is an indole alkaloid with formula C21H20N2O3, isolated from several Rauvolfia species and exhibits antipsychotic activity. It has a role as an antipsychotic agent. It is a methyl ester, an organic heteropentacyclic compound, a zwitterion and an indole alkaloid. It is a conjugate base of an alstonine(1+).
methyl (15S,16S,20S)-16-methyl-17-oxa-3,13-diazapentacyclo[11.8.0.02,10.04,9.015,20]henicosa-1,3,5,7,9,11,18-heptaene-19-carboxylate