(2R,3R,11bS)-(-)-10-benzyloxy-3-ethyl-1,3,4,6,7,11b-hexahydro-9-methoxy-2H-benzoquinolizine-2-acetic acid ethyl ester

(4R,5R)-5-ethyl-1-<2-(1H-indol-3-yl)ethyl>-2-oxo-4-piperidineacetic acid ethyl ester