4-Allyl-2,4-dihydro-5-(pyridin-2-yl)-3H-1,2,4-triazole-3-thione4-Allyl-5-(pyridin-2-yl)-4H-1,2,4-triazole-3-thiol2,4-Dihydro-4-(prop-2-en-1-yl)-5-(pyridin-2-yl)-3H-1,2,4-triazole-3-thione4-(prop-2-en-1-yl)-3-(pyridin-2-yl)-4,5-dihydro-1H-1,2,4-triazole-5-thione4-(Prop-2-en-1-yl)-5-(pyridin-2-yl)-4H-1,2,4-triazole-3-thiol