InChI=1S/C14H20O10/c15-7(16)5-3-1-2-4-6-8(17)23-14-11(20)9(18)10(19)12(24-14)13(21)22/h3,5,9-12,14,18-20H,1-2,4,6H2,(H,15,16)(H,21,22)/b5-3+