You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 4-amino-2-[[2-[2-[[2-amino-3-(1H-indol-3-yl)propanoyl]amino]propanoylamino]-4-methylsulfanylbutanoyl]amino]-4-oxobutanoic acid by IUPAC nomenclature, provide its molecular formula.
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C23H32N6O6S
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