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 2-amino-3-methyl-N-[4-[(1S)-2-oxa-5-azabicyclo[2.2.1]heptan-3-yl]phenyl]but-2-enamide using the IUPAC nomenclature.
user
C16H21N3O2
assistant