InChI=1S/C15H24O3/c1-9(2)11-4-5-12(14(17)18)15(11)7-6-10(3)13(16)8-15/h6,9,11-13,16H,4-5,7-8H2,1-3H3,(H,17,18)/t11-,12+,13-,15-/m0/s1