You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-amino-2-chloro-N-[(2R,3S,4S,5S,6R)-2,4,5-trihydroxy-6-(hydroxymethyl)oxan-3-yl]benzenesulfonamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C12H17ClN2O7S
assistant