You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(2R)-1-(carbamoylamino)-3-methyl-1-oxobutan-2-yl] 2-[(3,5-dimethyl-1,2-oxazol-4-yl)methylsulfanyl]benzoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H23N3O5S
assistant