You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[ethyl-(2-oxo-3,4-dihydro-1H-quinolin-5-yl)amino]ethyl (2R)-2-(dihydroxyamino)-2-methylbutanoate;hydrochloride The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H28ClN3O5
assistant