You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl 2-[5-amino-4-(1-cyclobutyl-3-methyl-2-oxobenzimidazol-5-yl)-3-(3-methylphenyl)pyrazol-1-yl]acetate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H29N5O3
assistant