You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named [2-(5-chlorothiophen-2-yl)-2-oxoethyl] 3-[(3,4-dimethoxyphenyl)methylidene]-1,2-dihydrocyclopenta[b]quinoline-9-carboxylate by IUPAC nomenclature, provide its molecular formula.
user
C28H22ClNO5S
assistant