InChI=1S/C16H22O8/c1-10(8-6-4-2-3-5-7-9-17)23-16-13(20)11(18)12(19)14(24-16)15(21)22/h2-3,5-14,16,18-20H,4H2,1H3,(H,21,22)/b3-2-,7-5+,8-6-