(4-hydroxy-2-oxo-2,5-dihydrofuran-3-yl)acetic acid 3-furanacetic acid, 2,5-dihydro-4-hydroxy-2-oxo- InChI=1/C6H6O5/c7-4-2-11-6(10)3(4)1-5(8)9/h7H,1-2H2,(H,8,9