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 N-[3-(6-tert-butylsulfonyl-7-methoxyimidazo[1,2-a]pyridin-3-yl)-5-chlorophenyl]acetamide using the IUPAC nomenclature.
user
C20H22ClN3O4S
assistant