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,3S,4R)-5-(4-chloro-3,5-dimethylphenoxy)-3-hydroxy-2-(hydroxymethyl)-2,4-dimethyl-5-oxopentanoic acid .
user
C16H21ClO6
assistant