InChI=1S/C18H30O4/c1-2-3-11-14-17(22-21)15-12-9-7-5-4-6-8-10-13-16-18(19)20/h7,9,11-12,14-15,17,21H,2-6,8,10,13,16H2,1H3,(H,19,20)/p-1