1,3-dithiane, 2-(4-methoxyphenyl)- 2-(4-methoxyphenyl)-1,3-dithiane InChI=1/C11H14OS2/c1-12-10-5-3-9(4-6-10)11-13-7-2-8-14-11/h3-6,11H,2,7-8H2,1H