InChI=1S/C18H21N3O10S/c1-21(27)9-2-5-11(6-3-9)32(28,29)20-12-7-4-10(8-19-12)30-18-15(24)13(22)14(23)16(31-18)17(25)26/h2-8,13-16,18,21-24H,1H3,(H,19,20)(H,25,26)