36519-42-3 NSC 72123 Oxayohimbanium, 3,4,5,6,16,17-hexadehydro-6-((16S,19E)-19,20-didehydro-16-(methoxycarbonyl)corynan-17-yl)-16-(methoxycarbonyl)-19-methyl-, (19alpha)- (9CI) Serpentinine