You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[2-(methylamino)-2-(1-methylcyclohexyl)acetyl]-N-[5-methyl-1,2-dioxo-1-(prop-2-enylamino)heptan-3-yl]pyrrolidine-2-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H44N4O4
assistant