You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(5-acetyl-3-methylpyrazol-1-yl)acetonitrile;2-(cyanomethyl)-5-methylpyrazole-3-carboxylic acid;1-(5-methyl-1H-pyrazol-3-yl)ethanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C28H31N11O6
assistant