InChI=1S/C22H24O7/c1-13(15-5-3-2-4-6-15)7-8-14-9-11-16(12-10-14)28-22-19(25)17(23)18(24)20(29-22)21(26)27/h2-6,9-12,17-20,22-25H,1,7-8H2,(H,26,27)