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 (2S)-2-[[(2S)-1-[(2S)-5-amino-2-[[(2S)-5-amino-5-oxo-2-[[(2S)-pyrrolidine-2-carbonyl]amino]pentanoyl]amino]-5-oxopentanoyl]pyrrolidine-2-carbonyl]amino]-3-(1H-indol-3-yl)propanoic acid .
user
C31H42N8O8
assistant