You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule (2R,4S)-2-[(1R)-1-[[(2R)-2-amino-2-phenylacetyl]amino]-2-oxoethyl]-5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid ?
user
C16H21N3O4S
assistant