You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 1-[5-fluoro-2-[1-[(2-fluorophenyl)methyl]-5-(1,2-oxazol-3-yl)pyrazol-3-yl]pyrimidin-4-yl]-3-hydroxypyrrolidin-2-one .
user
C21H16F2N6O3
assistant