(2S)-2-[(2′R,6′R,8a′S)-4,6′-Dihydroxy-2′,5′,5′,8a′-tetramethyl-6-oxo-3′,4′,4a′,5′,6,6′,7′,8,8′,8a′-decahydro-2′H-spiro[furo[2,3-e]isoindole-2,1′-naphthalen]-7(3H)-yl]-6-[(2′R,6′S,7′R,8a′S)-4,6′,7′-tri hydroxy-2′,5′,5′,8a′-tetramethyl-6-oxo-3′,4′,4a′,5′,6,6′,7′,8,8′,8a′-decahydro-2′H-spiro[furo[2,3-e]isoindole-2,1′-naphthalen]-7(3H)-yl]hexanoic acid

(2S)-2-[(2′R,6′R,8a′S)-4,6′-Dihydroxy-2′,5′,5′,8a′-tetramethyl-6-oxo-3′,4′,4a′,5′,6,6′,7′,8,8′,8a′-decahydro-2′H-spiro[furo[2,3-e]isoindole-2,1′-naphthalen]-7(3H)-yl]-6-[(2′R,6′S,7′R,8a′S)-4,6′,7′-tri hydroxy-2′,5′,5′,8a′-tetramethyl-6-oxo-3′,4′,4a′,5′,6,6′,7′,8,8′,8a′-decahydro-2′H-spiro[furo[2,3-e]isoindole-2,1′-naphthalen]-7(3H)-yl]hexanoic acid

Spiro[2H-furo[2,3-e]isoindole-2,1′(2′H)-naphthalene]-7(3H)-hexanoic acid, alpha-[(2′R,6′R,8a′S)-3′,4′,4′a,5′,6,6′,7′,8,8′,8′a-decahydro-4,6′-dihydroxy-2′,5′,5′,8′a-tetramethyl-6-oxospiro[2H-furo[2,3-e ]isoindole-2,1′(2′H)-naphthalen]-7(3H)-yl]-3′,4′,4′a,5′,6,6′,7′,8,8′,8′a-decahydro-4,6′,7′-trihydroxy-2′,5′,5′,8′a-tetramethyl-6-oxo-, (alphaS,2′R,6′S,7′R,8′aS)-