You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R)-3-[3-(4-ethylsulfanylphenyl)-4,5-dihydro-1,2-oxazol-5-yl]-N-hydroxy-2-methyl-2-methylsulfonylpropanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C16H22N2O5S2
assistant