InChI=1S/C15H22O3/c1-9(2)5-4-6-15(3)11-7-10(14(17)18)8-12(16)13(11)15/h5,7,11-13,16H,4,6,8H2,1-3H3,(H,17,18)/t11-,12+,13-,15+/m1/s1