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 (2Z,5R)-7-methyl-2-[[5-(4-methyl-3-nitrophenyl)furan-2-yl]methylidene]-3-oxo-5-(2-propan-2-yloxyphenyl)-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate .
user
C31H29N3O7S
assistant