You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(3-ethoxypropyl)-1-ethyl-2-oxo-4,5,6,7-tetrahydro-3H-quinoline-4a-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H28N2O3
assistant