InChI=1/C13H16N4O3S/c18-12-4-2-1-3-11(12)16-5-7-17(8-6-16)21(19,20)13-9-14-10-15-13/h1-4,9-10,18H,5-8H2,(H,14,15)/f/h14H 59376E4C01D80287