InChI=1/C20H20N4O4S2/c1-28-14-8-4-3-7-13(14)24-18(27)10-16(25)23-20(24)29-11-17(26)22-19-21-12-6-2-5-9-15(12)30-19/h2-9,16,20,23,25H,10-11H2,1H3,(H,21,22,26)/t16-,20+/m0/s1/f/h21H 5FCE1537452B2B44