You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 4-[2-fluoro-4-(3-hydroxypropyl)anilino]-N-(2-hydroxyethoxy)-1-methyl-6-oxopyridine-3-carboxamide by IUPAC nomenclature, provide its molecular formula.
user
C18H22FN3O5
assistant