(3Z)-3-[3-(1,3-dithian-2-yl)-3-methylbutylidene]dihydrofuran-2(3H)-one 2(3H)-furanone, 3-[3-(1,3-dithian-2-yl)-3-methylbutylidene]dihydro-, (3Z)- InChI=1/C13H20O2S2/c1-13(2,12-16-8-3-9-17-12)6-4-10-5-7-15-11(10)14/h4,12H,3,5-9H2,1-2H3/b10-4