You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3-ethyl-1,2-oxazol-5-yl)-[4-[(3-fluorophenyl)methyl]piperazin-1-yl]methanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H20FN3O2
assistant