InChI=1/C16H12N2O6S/c1-18-16(20)11-4-2-9(6-14(11)25(18,21)22)15(19)17-10-3-5-12-13(7-10)24-8-23-12/h2-7H,8H2,1H3,(H,17,19)/f/h17H 2047A23020FFE75C