You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S)-2-(dimethylsulfamoylamino)-3-[2-oxo-5-(2-phenylethyl)-4-thiocyanatopyrimidin-1-yl]butanoic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H23N5O5S2
assistant