You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[2-[(1,3-dimethylpyrrolidin-3-yl)methyl-methylamino]-4-methylpyrimidin-5-yl]ethanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C15H24N4O
assistant