InChI=1/C15H15N3O2S/c1-10-8-9-13(18(19)20)14(11(10)2)17-15(21)16-12-6-4-3-5-7-12/h3-9H,1-2H3,(H2,16,17,21)/f/h16-17H B3C3B75AC85A66B3