You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by 4-amino-2-[2-[[1-[2-amino-5-(diaminomethylideneamino)pentanoyl]pyrrolidine-2-carbonyl]amino]propanoylamino]-4-oxobutanoic acid ?
user
C18H32N8O6
assistant