You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[(E)-2-(2-cyclopentyloxy-3-methoxyphenyl)ethenyl]-1-(3-methylpyridin-2-yl)benzimidazole is the IUPAC name of a molecule. Please give its molecular formula.
user
C27H27N3O2
assistant