You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-ethylsulfanylethyl (4R,7R)-7-(2-methoxyphenyl)-2-methyl-4-(3-nitrophenyl)-5-oxo-4,6,7,8-tetrahydro-1H-quinoline-3-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C28H30N2O6S
assistant