InChI=1S/C15H22O3/c1-9-3-4-12-10(2)14(17)18-13(12)15(9)6-5-11(7-15)8-16/h7,9-10,12-13,16H,3-6,8H2,1-2H3/t9-,10-,12+,13-,15-/m0/s1