You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 3-(2,2-dichloroethenyl)-N-(1,1-dioxothiolan-3-yl)-N-[(4-ethoxyphenyl)methyl]-2,2-dimethylcyclopropane-1-carboxamide ?
user
C21H27Cl2NO4S
assistant