(3-beta,16E)-16,17,18,19-Tetradehydro-17-methoxy-corynan-16-carboxylic acid methyl ester 35467-43-7 Corynan-16-carboxylic acid, 16,17,18,19-tetradehydro-17-methoxy-, methyl ester, (3-beta,16E)- Corynan-16-carboxylic acid, 16,17,18,19-tetrahydro-17-methoxy-, methyl ester, (3beta,16E)- Hirsuteine delta(sup 18)-Hirsutine