InChI=1S/C17H15NO10S/c1-27-15-6-9(2-4-14(15)28-29(24,25)26)3-5-16(21)18-11-8-13(20)12(19)7-10(11)17(22)23/h2-8,19-20H,1H3,(H,18,21)(H,22,23)(H,24,25,26)