InChI=1/C12H11N3O5S/c1-7(16)13-12-14(6-11(17)20-2)9-5-8(15(18)19)3-4-10(9)21-12/h3-5H,6H2,1-2H3/p+1/fC12H12N3O5S/h16H/q+1 855ABC2673F8BB8A