InChI=1S/C15H20O2/c1-8(2)7-10-12(16-10)14(4)11-9(3)5-6-15(11)13(14)17-15/h7,10-13H,3,5-6H2,1-2,4H3/t10-,11+,12+,13-,14-,15+/m0/s1