InChI=1/C17H14N2O4S/c1-17(16(21)19-11-4-2-3-5-14(11)24-17)15(20)18-10-6-7-12-13(8-10)23-9-22-12/h2-8H,9H2,1H3,(H,18,20)(H,19,21)/t17-/m1/s1/f/h18-19H 2EB98CC63C4D8848