Synonyms: Indolo[2,3-a]quinolizin-3-carboxylicacid, 2-(2,5-dihydro-2-oxo-3-furanyl)-1,2,6,7,12,12b-hexahydro-, methyl ester,(2S-trans)- (9CI); Indolo[2,3-a]quinolizine-3-carboxylic acid,1,2,3,4,6,7,12,12b-octahydro-2-[1-(hydroxymethyl)propenyl]-, d-lactone (7CI);Oxayohimban-19-one, 16-ethylidene-, (16Z)-;4H-Indolo[2,3-a]pyrano[3,4-g]quinolizine, oxayohimban-19-one deriv.;Vallesiachotamine lactone