(E)-16,17-Didehydro-17-methoxy-17,18-seco-3-beta-yohimban-16-carboxylic acid methyl ester 17,18-Seco-3-beta-yohimban-16-carboxylic acid, 16,17-didehydro-17-methoxy-, methyl ester, (E)- 7729-23-9 Corynan-16-carboxylic acid, 16,17-didehydro-17-methoxy-, methyl ester, (3-beta,16E)- (9CI) Hirsutine