IUPAC:(2R)-2-amino-3-({2',7'-difluoro-3',6'-dihydroxy-3-oxo-3H-spiro[2-benzofuran-1,9'-xanthen]-6-yl}formamido)propanoic acid
IUPAC:(2R)-2-amino-3-({2',7'-difluoro-3',6'-dihydroxy-3-oxo-3H-spiro[2-benzofuran-1,9'-xanthen]-6-yl}formamido)propanoic acid