(7S,20α)-19α-Methyl-2-oxoformosanan-16-carboxylic acid methyl ester | (7alpha,19alpha,20alpha)-19-Methyl-2-oxoformosanan-16-carboxylic acid methyl ester |
methyl (1R,4aR,10aR)-1-methyl-2'-oxospiro[1,4a,5,5a,7,8,10,10a-octahydropyrano[3,4-f]indolizine-6,3'-1H-indole]-4-carboxylate | methyl (1R,4aR,10aR)-1-methyl-2'-oxo-spiro[1,4a,5,5a,7,8,10,10a-octahydropyrano[3,4-f]indolizine-6,3'-1H-indole]-4-carboxylate |