InChI=1/C12H8NO6S2/c14-11(15)7-1-3-8(4-2-7)13-21(18,19)9-5-6-20-10(9)12(16)17/h1-6H,(H,14,15)(H,16,17)/q-1/p-2/fC12H6NO6S2/q-3 E174D647BB3E3D33