英文别名1-((3',6'-Dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthen]-5-yl)amino)-1-thioxo-5,8,11,14-tetraoxa-2-azaheptadecan-17-oic acid; 3-[2-[2-[2-[2-[(3',6'-dihydroxy-3-oxospiro[2-benzofuran-1,9'-xanthene]-5-yl)carbamothioylamino]ethoxy]ethoxy]ethoxy]ethoxy]propanoic acid; 5-FITC-PEG4-COOH; 1-[({3',6'-dihydroxy-3-oxo-3H-spiro[2-benzofuran-1,9'-xanthen]-5-yl}carbamothioyl)amino]-3,6,9,12-tetraoxapentadecan-15-oic acid; 4,7,10,13-Tetraoxa-16-azaheptadecanoic acid, 17-[(3',6'-dihydroxy-3-oxospiro[isobenzofuran-1(3H),9'-[9H]xanthen]-5-yl)amino]-17-thioxo-; Flurescein-PEG4-COOH; 5-FITC-PEG4-PA 
