1,3,4-thiadiazole, 2,5-bis[(2-chloroethyl)thio]- 2,5-bis[(2-chloroethyl)thio]-1,3,4-thiadiazole InChI=1/C6H8N6S2Se2/c1-7-3-9-11-5(13-3)15-16-6-12-10-4(8-2)14-6/h1-2H3,(H,7,9)(H,8,10