ethyl N-[(3R,3aS,4S,4aR,7R,8aR,9aR)-4-[(E)-2-[5-(3-fluorophenyl)pyridin-2-yl]ethenyl]-3-methyl-1-oxo-3a,4,4a,5,6,7,8,8a,9,9a-decahydro-3H-naphtho[6,7-c]furan-7-yl]carbamate ethyl N-[(3R,3aS,4S,4aR,7R,8aR,9aR)-4-[(E)-2-[5-(3-fluorophenyl)-2-pyridyl]vinyl]-3-methyl-1-oxo-3a,4,4a,5,6,7,8,8a,9,9a-decahydro-3H-benzo[f]isobenzofuran-7-yl]carbamate N-[(3R,3aS,4S,4aR,7R,8aR,9aR)-4-[(E)-2-[5-(3-fluorophenyl)-2-pyridyl]vinyl]-3-methyl-1-oxo-3a,4,4a,5,6,7,8,8a,9,9a-decahydro-3H-benzo[f]isobenzofuran-7-yl]carbamic acid ethyl ester N-[(3R,3aS,4S,4aR,7R,8aR,9aR)-4-[(E)-2-[5-(3-fluorophenyl)-2-pyridyl]vinyl]-1-keto-3-methyl-3a,4,4a,5,6,7,8,8a,9,9a-decahydro-3H-benzo[f]isobenzofuran-7-yl]carbamic acid ethyl ester