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 (3R)-3-[3-(diaminomethylideneamino)propyl]-4-oxo-1-(4-propanoylpiperazine-1-carbonyl)azetidine-2-carboxylic acid .
user
C16H26N6O5
assistant