InChI=1S/C16H20O8/c1-16(8-17,7-9-5-3-2-4-6-9)24-15-12(20)10(18)11(19)13(23-15)14(21)22/h2-6,8,10-13,15,18-20H,7H2,1H3,(H,21,22)