InChI=1S/C18H30O5/c1-2-14-15(17(21)12-16(14)20)11-10-13(19)8-6-4-3-5-7-9-18(22)23/h10-11,13-16,19-20H,2-9,12H2,1H3,(H,22,23)/b11-10+