You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(4,7-dimethyl-1,3-benzothiazol-2-yl)-3-piperidin-1-ylsulfonylthiophene-2-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H21N3O3S3
assistant