You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named [(2R)-1-(4-carbamoylanilino)-1-oxopropan-2-yl] 3-(3,5-dimethyl-1,2-oxazol-4-yl)propanoate by IUPAC nomenclature, provide its molecular formula.
user
C18H21N3O5
assistant