IUPAC: 2',4',5',7'-tetrabromo-3',6'-dihydroxy-3H-spiro[2-benzofuran-1,9'-xanthen]-3-one
IUPAC: 2',4',5',7'-tetrabromo-3',6'-dihydroxy-3H-spiro[2-benzofuran-1,9'-xanthen]-3-one
SMILES: Oc1c(Br)cc2c(Oc3c(Br)c(O)c(Br)cc3C22OC(=O)c3ccccc23)c1Br
SMILES: Oc1c(Br)cc2c(Oc3c(Br)c(O)c(Br)cc3C22OC(=O)c3ccccc23)c1Br