Vinpocetine

Chemical Name: Ethyl (13aS,13bS)-13a-ethyl-2,3,5,6,13a,13b-hexahydro-1H-indolo[3,2,1-de]pyrido[3,2,1-ij][1,5]naphthyridine-12-carboxylate (as per EP) ; (Eburnamenine-14-carboxylic acid, ethyl ester, (3α,16α) (as per USP)

Smile: O=C(OCC)C1=C[C@@]2(CC)[C@]3([H])N(CCC2)CCC4=C3N1C5=C4C=CC=C5