InChI=1S/C17H24O4/c1-10-6-13(21-11(2)20)15-14(12(10)7-18)17(5,9-19)8-16(15,3)4/h7,9-10,13,15H,6,8H2,1-5H3/t10-,13+,15-,17-/m1/s1