You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule ethyl (2E,5R)-5-(5-bromo-2-methoxyphenyl)-2-[[4-[(2,4-dichlorophenyl)methoxy]-3-methoxyphenyl]methylidene]-3-oxo-7-propyl-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate .
user
C34H31BrCl2N2O6S
assistant