InChI=1S/C22H20O11/c1-9(23)30-8-18-19(28)20(29)22(33-18)32-17-7-12-14(26)5-11(24)6-16(12)31-21(17)10-2-3-13(25)15(27)4-10/h2-7,18-20,22,28-29H,8H2,1H3,(H3-,24,25,26,27)/p+1/t18-,19-,20+,22+/m1/s1