Synonyms: Yohimban-16-carboxylic acid, 18-hydroxy-17-((3,4,5-trimethoxybenzoyl)oxy)-, methyl ester, (3beta,16beta,17alpha,18beta,20alpha)-;Yohimban-16-carboxylic acid, 18-hydroxy-17-[(3,4,5-trimethoxybenzoyl)oxy]-, methyl ester, (3.beta.,16.beta.,17.alpha.,18.beta.,20.alpha.)-