InChI=1S/C14H15N3O4S/c18-22(19,20)21-9-12-8-13(10-6-7-10)17-14(16-12)15-11-4-2-1-3-5-11/h1-5,8,10H,6-7,9H2,(H,15,16,17)(H,18,19,20)