InChI=1S/C17H22O11/c1-17(6-18,16(24)25)7-3-4-8(26-2)9(5-7)27-15-12(21)10(19)11(20)13(28-15)14(22)23/h3-5,10-13,15,18-21H,6H2,1-2H3,(H,22,23)(H,24,25)