You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance (2S)-3-(3-cyanophenyl)-2-[[(2S)-2-hydroxy-2-[4-(trifluoromethyl)phenyl]acetyl]amino]propanoic acid .
user
C19H15F3N2O4
assistant