InChI=1S/C16H22O8/c1-15(4-17)6-2-7-8(3-6)16(7,15)5-23-14-11(20)9(18)10(19)12(24-14)13(21)22/h4,6-12,14,18-20H,2-3,5H2,1H3,(H,21,22)