You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[1-[(4-chlorophenyl)methyl]benzimidazol-2-yl]sulfanyl-N-[1-(4-hydroxy-3-methoxyphenyl)ethylideneamino]acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H23ClN4O3S
assistant