InChI=1S/C16H24O3/c1-2-3-4-5-6-7-12-8-9-13-15(19-12)11-10-14(17)16(13)18/h6-7,12,14,17H,2-5,8-11H2,1H3/b7-6+/t12-,14+/m1/s1