InChI=1S/C15H22O2/c1-11-4-3-8-15(2)9-7-12(10-13(11)15)5-6-14(16)17/h5-6,12H,3-4,7-10H2,1-2H3,(H,16,17)/b6-5+/t12-,15-/m1/s1