InChI=1S/C19H22O7/c1-7-5-17-6-18(7,24)4-3-8(17)19-11(9(17)14(21)22)16(2,15(23)26-19)13-10(25-13)12(19)20/h8-13,20,24H,1,3-6H2,2H3,(H,21,22)