You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-methyl-N-piperidin-3-yl-4-piperidin-1-ylsulfonylpyrrole-2-carboxamide;hydrochloride The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H27ClN4O3S
assistant