(1'S-(1'alpha,5'abeta,8'alpha,9'alpha,9'aalpha,10'aalpha))-Methyl 1,2,2',3',5'a,6',7',8',9',9'a,10',10'a-dodecahydro-8'-hydroxy-2-oxospiro(3H-indole-3,1'(5'H)-pyrrolo(1,2-b)isoquinoline)-9'-carboxylate 5074-58-8 Spiro(3H-indole-3,1'(5'H)-pyrrolo(1,2-b)soquinoline)-9-carboxylic acid, 1,2,2',3',5'a,6',7',8',9',9'a,10',10'a-dodecahydro-8'-hydroxy-2-oxo-, methyl ester, (1'S,5'aR,8'S,9'R,9'aS,10'aS)- Yohimbine Oxindole A Yohimbine oxindole