You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-[4-[butyl(furan-2-ylmethyl)amino]-3-(propylcarbamoyl)phenyl]-4-chloro-3-nitrobenzamide by IUPAC nomenclature, provide its molecular formula.
user
C26H29ClN4O5
assistant