(S)-1-((S)-4-(2-((3S,5R)-3,5-dihydroxy-2-methylene-cyclohex-(Z)-ylidene)-eth-(E)-ylidene)-7a-methyl-3a,4,5,6,7,7a-hexahydro-3H-inden-1-yl)-ethoxy-acetic acid 1-ethyl-1-methyl-propyl ester
(s)-1-((s)-4-(2-((3s,5r)-3,5-dihydroxy-2-methylene-cyclohex-(z)-ylidene)-eth-(e)-ylidene)-7a-methyl-3a,4,5,6,7,7a-hexahydro-3h-inden-1-yl)-ethoxy-acetic acid 1-ethyl-1-methyl-propyl ester