InChI=1S/C18H32O4/c1-2-3-4-5-6-7-8-11-14-17(22-21)15-12-9-10-13-16-18(19)20/h6-7,11,14,17,21H,2-5,8-10,12-13,15-16H2,1H3,(H,19,20)/t17-/m0/s1