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 2-(3-chloropyrazol-1-yl)-5-[4-(2,2-dimethylpropoxy)-3-methoxyphenyl]-4H-thieno[2,3-c]pyrrol-6-one ?
user
C21H22ClN3O3S
assistant