InChI=1S/C15H22O3/c1-8(2)11-5-4-9(3)14-12(11)6-10(15(17)18)7-13(14)16/h6,8,11-14,16H,3-5,7H2,1-2H3,(H,17,18)/t11-,12+,13+,14-/m0/s1