You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 6-[[(2S)-2-aminocyclohexyl]amino]-2-(3,5-dichloroanilino)-5-fluoropyridine-3-carboxamide is given. What is its corresponding molecular formula?
user
C18H20Cl2FN5O
assistant