InChI=1S/C18H17NO10S/c1-27-15-9-12(11(18(22)23)8-13(15)20)19-17(21)6-4-10-3-5-14(16(7-10)28-2)29-30(24,25)26/h3-9,20H,1-2H3,(H,19,21)(H,22,23)(H,24,25,26)