3582-26-1 (1R)-7β-Ethenyl-1,2,3,4,4a,5,6,7,8,9,10,10aα-dodecahydro-1,4aβ,7-trimethyl-1α-phenanthrenecarboxylic acid methyl ester 3582-27-2 (1R)-7β-Ethyl-1,2,3,4,4a,4bα,5,6,7,9,10,10aα-dodecahydro-1β,4aβ,7α-trimethyl-1α-phenanthrenecarboxylic acid methyl ester