Synonyms: (alphaE,1'R,6'R,7'S,8'aS)-6'-Ethyl-1,2,2',3',6',7',8',8'a-octahydro-alpha-(methoxymethylene)-2-oxo- Spiro[3H-indole-3,1'(5'H)-indolizine]-7'-acetic acid methyl ester; (7beta,16E,20alpha)-16,17-Didehydro-17-methoxy-2-oxo-corynoxan-16-carboxylic acid methyl ester; Mitrinermin; NSC 21731;…