You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-(2,5-dimethylphenoxy)-N-[[1-[3-(4-methylphenoxy)propyl]benzimidazol-2-yl]methyl]acetamide by IUPAC nomenclature, provide its molecular formula.
user
C28H31N3O3
assistant