You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S,3S)-3-(2-chlorophenyl)-2-hydroxy-3-[(2-methylpropan-2-yl)oxycarbonylamino]propanoic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C14H18ClNO5
assistant