You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2-[[2-[[2-[(2-amino-3-methylpentanoyl)amino]-3-hydroxypropanoyl]amino]-3-(1H-imidazol-5-yl)propanoyl]amino]-3-hydroxypropanoic acid into molecular formula.
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C18H30N6O7
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