Methyl (3S)-3-hydroxy-5-[(2S,4aR,5′R,6aS,7S)-2-{[(2R,3R,4S,5S,6R)-4-hydroxy-6-(hydroxymethyl)-5-{[(2R,3S,4R,5R,6S)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl]oxy}-3-{[(2S,3R,4R,5R,6S)- 3,4,5-trihydroxy-6-methyltetrahydro-2H-pyran-2-yl]oxy}tetrahydro-2H-pyran-2-yl]oxy}-4a,6a,7-trimethyl-1,2,3,3′,4,4′,4a,4b,5,5′,6,6′,6a,6b,7,9a,10,10a,10b,11-icosahydrospiro[naphtho[2′,1′:4,5]indeno[2, 1-b]furan-8,2′-pyran]-5′-yl]-3-methyl-5-oxop

Methyl (3S)-3-hydroxy-5-[(2S,4aR,5′R,6aS,7S)-2-{[(2R,3R,4S,5S,6R)-4-hydroxy-6-(hydroxymethyl)-5-{[(2R,3S,4R,5R,6S)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl]oxy}-3-{[(2S,3R,4R,5R,6S)- 3,4,5-trihydroxy-6-methyltetrahydro-2H-pyran-2-yl]oxy}tetrahydro-2H-pyran-2-yl]oxy}-4a,6a,7-trimethyl-1,2,3,3′,4,4′,4a,4b,5,5′,6,6′,6a,6b,7,9a,10,10a,10b,11-icosahydrospiro[naphtho[2′,1′:4,5]indeno[2, 1-b]furan-8,2′-pyran]-5′-yl]-3-methyl-5-oxop

Methyl (3S)-3-hydroxy-5-[(2S,4aR,5′R,6aS,7S)-2-{[(2R,3R,4S,5S,6R)-4-hydroxy-6-(hydroxymethyl)-5-{[(2R,3S,4R,5R,6S)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl]oxy}-3-{[(2S,3R,4R,5R,6S)- 3,4,5-trihydroxy-6-methyltetrahydro-2H-pyran-2-yl]oxy}tetrahydro-2H-pyran-2-yl]oxy}-4a,6a,7-trimethyl-1,2,3,3′,4,4′,4a,4b,5,5′,6,6′,6a,6b,7,9a,10,10a,10b,11-icosahydrospiro[naphtho[2′,1′:4,5]indeno[2, 1-b]furan-8,2′-pyran]-5′-yl]-3-methyl-5-oxopentanoate