You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule (2S)-1-[(2R)-2-(cyclopentylmethyl)-3-[formyl(hydroxy)amino]propanoyl]-N-(5-fluoropyridin-2-yl)-4-methylidenepyrrolidine-2-carboxamide ?
user
C21H27FN4O4
assistant