You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 5-chloro-N-(4-chloro-3-cyano-1H-indol-7-yl)-1-(1-hydroxy-2-methylpropan-2-yl)pyrazole-4-sulfonamide into its molecular formula.
user
C16H15Cl2N5O3S
assistant