InChI=1S/C15H26O4/c1-9(2)15(19)7-10-13(3,8-12(15)17)6-5-11(16)14(10,4)18/h10-12,16-19H,1,5-8H2,2-4H3/t10-,11+,12-,13-,14+,15-/m1/s1