InChI=1S/C14H8O8S2.Na/c15-13-9-3-1-7(23(17,18)19)5-11(9)14(16)12-6-8(24(20,21)22)2-4-10(12)13;/h1-6H,(H,17,18,19)(H,20,21,22);/q;+1/p-1