You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule 6-[2-(4-chlorophenyl)sulfonylethyl]-1-methyl-4-oxo-3-phenylmethoxy-N-propan-2-ylpyridine-2-carboxamide ?
user
C25H27ClN2O5S
assistant