2H-Pyran-2-acetic acid, 6-(1-ethyl-4-(1-ethyl-2,3,3a,4,5,7a-hexahydro-4-(1H-pyrrol-2-ylcarbonyl)-1H-inden-5-yl)-1,3-butadienyl)tetrahydro-alpha,5-dimethyl-, (1S-(1alpha,3abeta,4beta,5beta(1E(2S*(S*),5R*,6S*),3E),7aalpha))-