(2aS,2'R,4S,5'R,6aR,6bS,8aS,8bR,11aS,12aS,12bR)-2a,5',6a,8a-tetramethyl-4-(((2R,3R,4R,5R,6R)-3,4,5-trihydroxy-5-(((2S,3R,5R,6R)-5-hydroxy-6-(hydroxymethyl)-3-(((2S,3R,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)-4-(((2S,3R,5R)-3,4,5-trihydroxytetrahydro-2H-pyran-2-yl)oxy)tetrahydro-2H-pyran-2-yl)oxy)-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)icosahydrospiro[naphtho[2',1':4,5]indeno[2,1-b]furan-10,2'-pyran]-8(2H)-one