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 2-[2-[[2-[(2-amino-3-methylbutanoyl)amino]-3-(1H-imidazol-5-yl)propanoyl]amino]propanoylamino]pentanedioic acid .
user
C19H30N6O7
assistant