You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (2R)-2-[[(2R)-4-amino-1-[[[(2R)-2-amino-3-hydroxybutyl]amino]-methylamino]-4-oxobutan-2-yl]carbamothioylamino]-3-hydroxypropanoic acid into molecular formula.
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C13H28N6O5S
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