1H-indole-3-carboxylic acid, octahydro-3-oxo-2,6-methano-2H-quinolizin-8-yl ester, (2-alpha,6-alpha,8-alpha,9a-beta)-
indole-3-carboxylic acid, ester with (8R)-hexahydro-8-hydroxy-2,6-methano-2H-quinolizin-3(4H)-one