Synonyms: Yohimban-16-carboxylicacid,21-[(16E)-16,17-didehydro-9-hydroxy-17-methoxy-16-(methoxycarbonyl)corynan-11-yl]-9,17-dihydroxy-,methyl ester, (3b,16a,17a,21b)-; Benz[g]indolo[2,3-a]quinolizine, yohimban-16-carboxylic acid deriv.;Corynan, yohimban-16-carboxylic acid deriv.; Callophylline B