IUPAC:3',6'-bis({[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy})-3H-spiro[2-benzofuran-1,9'-xanthen]-3-one
IUPAC:3',6'-bis({[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy})-3H-spiro[2-benzofuran-1,9'-xanthen]-3-one