You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2,3-dichloro-N-(1,5-dimethyl-3-oxo-2-phenylpyrazol-4-yl)-5-[(7H-purin-6-ylamino)carbamoyl]benzenesulfonamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H19Cl2N9O4S
assistant