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 1-[5-[[4-(2-methylsulfonylethoxy)phenyl]methyl]-3-propyl-1,2-oxazol-4-yl]ethanone using the IUPAC nomenclature.
user
C18H23NO5S
assistant