You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance methyl (2S)-4-[butyl(dimethyl)silyl]oxy-2-[3-(2-chlorophenoxy)-5-oxo-2H-pyrrol-1-yl]butanoate .
user
C21H30ClNO5Si
assistant