(2Z,4Z)-3,4-diisothiocyanatohexa-2,4-diene 2,4-hexadiene, 3,4-diisothiocyanato-, (2Z,4Z)- InChI=1/C8H8N2S2/c1-3-7(9-5-11)8(4-2)10-6-12/h3-4H,1-2H3/b7-3-,8-4