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