Showing structure for methyl (2r,4ar,6r,6as,10ar,10bs)-2-[(2s,3s,4s,5s)-3,4-dihydroxy-2,5-dimethoxyoxolan-3-yl]-6a,10b-dimethyl-4-oxo-6-{[(2r,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-1h,2h,4ah,5h,6h,9h,10h,10ah-naphtho[2,1-c]pyran-7-carboxylate