InChI=1S/C19H30O8/c1-5-6-7-10-18(2,3)9-8-11(20)19(10,4)27-17-14(23)12(21)13(22)15(26-17)16(24)25/h5-6,10,12-15,17,21-23H,7-9H2,1-4H3,(H,24,25)/b6-5-