InChI=1S/C15H22O3/c1-8-4-5-10-9(2)12(16)17-11(10)15(8)7-6-14(3)13(15)18-14/h8-11,13H,4-7H2,1-3H3/t8-,9-,10+,11-,13+,14+,15-/m1/s1