InChI=1S/C18H28O4/c1-2-3-4-5-6-9-12-16(19)13-10-7-8-11-14-17(20)15-18(21)22/h6-10,13,16,19H,2-5,11-12,14-15H2,1H3,(H,21,22)/b8-7+,9-6-,13-10+/t16-/m0/s1