Methyl 2-(6-phenyl-6,7-dihydro-5h-[1,2,4]triazolo[3,4-b][1,3,5]thiadiazin-3-yl)phenyl Ether (en)5h-1,2,4-triazolo[3,4-b][1,3,5]thiadiazine, 6,7-dihydro-3-(2-methoxyphenyl)-6-phenyl- (en)