InChI=1S/C19H26O4/c1-6-7-13-12(3)16(9-15(13)21)23-18(22)17-14(19(17,4)5)8-11(2)10-20/h6,8,14,16-17,20H,1,7,9-10H2,2-5H3/b11-8-/t14-,16+,17+/m1/s1