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 methyl (3R)-3-[6-[(2-chlorophenyl)sulfanylmethyl]-3-hydroxy-4-oxopyran-2-yl]-3-(4-hydroxyphenyl)propanoate ?
user
C22H19ClO6S
assistant