You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-chloro-4-[[2-[6-(cyclopropylmethylsulfonyl)pyridin-3-yl]acetyl]amino]-N-ethyl-N-phenylbenzamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H26ClN3O4S
assistant