InChI=1S/C15H22O3/c1-10-4-3-5-11(8-16)14(18)6-13-12(10)7-15(13,2)9-17/h5,12-13,16-17H,1,3-4,6-9H2,2H3/b11-5-/t12-,13+,15+/m0/s1