You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[(3S,4R)-4-[(3,4-dichloro-5-methyl-1H-pyrrole-2-carbonyl)amino]-3-methoxypiperidin-1-yl]-N-methoxy-1,3-thiazole-5-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H21Cl2N5O4S
assistant