InChI=1S/C23H20O10/c24-16-7-1-14(2-8-16)5-11-20(28)32-18(13-19(26)27)22(23(30)31)33-21(29)12-6-15-3-9-17(25)10-4-15/h1-12,18,22,24-25H,13H2,(H,26,27)(H,30,31)/b11-5+,12-6+/t18-,22+/m0/s1