InChI=1/C18H8N2S2/c19-13-21-11-9-15-1-5-17(6-2-15)18-7-3-16(4-8-18)10-12-22-14-20/h1-8 biphenyl-4,4'-diyldiethyne-2,1-diyl bis(thiocyanate) thiocyanic acid, [1,1'-biphenyl]-4,4'-diyldi-2,1-ethynediyl ester