InChI=1S/C17H26O4/c1-10-6-13(21-11(2)20)15-14(12(10)7-18)17(5,9-19)8-16(15,3)4/h7,10,13,15,19H,6,8-9H2,1-5H3/t10-,13+,15-,17-/m1/s1