You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as methyl 2-[6-chloro-1-[4-(difluoromethoxy)benzoyl]-5-hydroxy-2-methylindol-3-yl]acetate using the IUPAC nomenclature.
user
C20H16ClF2NO5
assistant