1,3,4-Oxadiazole-2(3H)-thione, 3-(((2,3-dimethylphenyl)amino)methyl)-5-(4-pyridinyl)- 3-(((2,3-Dimethylphenyl)amino)methyl)-5-(4-pyridinyl)-1,3,4-oxadiazole-2(3H)-thione 84249-78-5