InChI=1S/C17H28O8/c1-2-3-4-5-6-7-8-10-11(24-10)9-23-17-14(20)12(18)13(19)15(25-17)16(21)22/h6-7,10-15,17-20H,2-5,8-9H2,1H3,(H,21,22)/b7-6-