InChI=1S/C15H16O12/c16-5(13(22)23)3-4-1-2-6(8(18)7(4)17)26-15-11(21)9(19)10(20)12(27-15)14(24)25/h1-2,9-12,15,17-21H,3H2,(H,22,23)(H,24,25)