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-[[5-amino-2-[[2-[(2-amino-3-sulfanylpropanoyl)amino]-3-(1H-imidazol-5-yl)propanoyl]amino]-5-oxopentanoyl]amino]-3-phenylpropanoic acid into molecular formula.
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C23H31N7O6S
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