InChI=1S/C16H26O8/c1-9(5-7-17)4-6-16(2,3)8-23-15-12(20)10(18)11(19)13(24-15)14(21)22/h5,7,10-13,15,18-20H,4,6,8H2,1-3H3,(H,21,22)/b9-5+