ethyl (2Z)-5-(3,4-dimethoxyphenyl)-7-methyl-2-({3-[(4-nitrobenzyl)oxy]phenyl}methylidene)-3-oxo-2,3-dihydro-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate [ 5668-65-5 ]