InChI=1S/C8H15N3O5S2/c9-4(7(14)11-1-6(12)13)2-17-18-3-5(10)8(15)16/h4-5H,1-3,9-10H2,(H,11,14)(H,12,13)(H,15,16)/t4?,5-/m0/s1