You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl (2E,5R)-5-(3,4-dimethoxyphenyl)-7-methyl-3-oxo-2-[(4-pyrrolidin-1-ylphenyl)methylidene]-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C29H31N3O5S
assistant