InChI=1S/C16H16O8/c17-8-1-2-10(18)9(5-8)11(19)6-15-4-3-12(20)16(15,13(21)22)7-24-14(15)23/h1-2,5,12,17-18,20H,3-4,6-7H2,(H,21,22)/t12-,15+,16-/m0/s1