You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as S-[2-[3-[[(2R)-2,4-dihydroxy-3,3-dimethylbutanoyl]amino]propanoylamino]ethyl] 4-hydroxybutanethioate using the IUPAC nomenclature.
user
C15H28N2O6S
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