InChI=1/C14H18N4O2S/c1-9-5-6-10(2)13(7-9)21(19,20)18-17-14-15-11(3)8-12(4)16-14/h5-8,18H,1-4H3,(H,15,16,17)/f/h17H 1E1F9279CB6C7F92