You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-(2-methyl-1H-indol-3-yl)-2-[2-(naphthalen-2-yloxymethyl)benzimidazol-1-yl]ethanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C29H23N3O2
assistant