You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule [2-(2-methoxyethylamino)-2-oxoethyl] 3,7-dichloro-6-methoxy-1-benzothiophene-2-carboxylate into molecular formula.
user
C15H15Cl2NO5S
assistant