You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2,6-dimethoxyphenyl)-[4-[6-(4-ethoxyphenyl)pyrimidin-4-yl]piperazin-1-yl]methanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H28N4O4
assistant