InChI=1S/C18H15N3O7S/c1-7(22)20-10(18(26)27)6-29-16-14(19)11(23)5-13-15(16)21-9-4-8(17(24)25)2-3-12(9)28-13/h2-5,10H,6,19H2,1H3,(H,20,22)(H,24,25)(H,26,27)/t10-/m0/s1