InChI=1S/C15H22O3/c1-8-6-15(7-12(8)16)9(2)4-5-11-10(3)14(17)18-13(11)15/h6,9-13,16H,4-5,7H2,1-3H3/t9-,10-,11+,12+,13-,15+/m0/s1