InChI=1S/C19H22O6/c1-8-5-17-7-18(8,23)4-3-10(17)19-6-9-13(24-9)16(2,15(22)25-19)12(19)11(17)14(20)21/h9-13,23H,1,3-7H2,2H3,(H,20,21)