You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name potassium;5-tert-butyl-3H-1,2-oxazol-3-ide;6-fluoro-N-phenylpyridine-2-carboxamide ?
user
C19H18FKN3O2-
assistant