You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named ethyl (6R)-6-(2,5-dimethoxyphenyl)-4-[(4-ethylpiperazin-1-yl)methyl]-3-methyl-2-oxo-1,6-dihydropyrimidine-5-carboxylate by IUPAC nomenclature, provide its molecular formula.
user
C23H34N4O5
assistant