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 3-methyl-N-[4-(4-propan-2-yloxyphenyl)-1,2,5-oxadiazol-3-yl]butanamide using the IUPAC nomenclature.
user
C16H21N3O3
assistant