InChI=1S/C16H22O3/c1-10(2)5-6-12-9-13(17)15-16(19-15,14(12)18)8-7-11(3)4/h5,7,13-15,17-18H,1,8-9H2,2-4H3/t6?,13-,14+,15-,16+/m0/s1