You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name N-(2-methoxy-5-methylphenyl)-4-(2-methyl-6-pyrazol-1-ylpyrimidin-4-yl)piperazine-1-carboxamide ?
user
C21H25N7O2
assistant