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 3-O-benzyl 5-O-propan-2-yl 6-methyl-4-(3-nitrophenyl)-2-oxo-4,5-dihydropyrimidine-3,5-dicarboxylate .
user
C23H23N3O7
assistant