You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule methyl (2S,3R)-2-[[(8S)-6-benzyl-2,6-diazaspiro[3.4]octane-8-carbonyl]amino]-3-(cyclohexylmethoxy)butanoate .
user
C26H39N3O4
assistant