You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-methoxyethyl (4S,7R)-4-(2-ethoxyphenyl)-2-methyl-5-oxo-7-phenyl-4,6,7,8-tetrahydro-1H-quinoline-3-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C28H31NO5
assistant