You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by 3-acetyl-7-amino-N-[2-fluoro-5-(hydroxymethyl)-3-(1-methylpyrazol-4-yl)phenyl]indolizine-1-carboxamide ?
user
C22H20FN5O3
assistant