You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 2-chloro-5-[methyl(propan-2-yl)sulfamoyl]-N-(oxolan-2-ylmethyl)-N-(thiophen-2-ylmethyl)benzamide .
user
C21H27ClN2O4S2
assistant