You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule tert-butyl 2-[5-[4-[(Z)-N'-[(2-methylpropan-2-yl)oxycarbonyl]carbamimidoyl]phenyl]-4,5-dihydro-1,2-oxazol-3-yl]acetate .
user
C21H29N3O5
assistant