You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S)-6-(1H-benzimidazol-2-ylmethyl)-N-(3-pyridin-4-ylpropyl)-6-azaspiro[2.5]octane-2-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C24H29N5O
assistant