You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(Z)-2-cyano-3-(cyclopropylamino)-N-[3-(2-oxopyrrolidin-1-yl)propyl]prop-2-enamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C14H20N4O2
assistant