You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (2S,4R)-1-[2-[3-[2-(3-cyano-4-propan-2-yloxyphenyl)-1,3-thiazol-5-yl]-2-ethylphenyl]ethyl]-4-hydroxypyrrolidine-2-carboxylic acid by IUPAC nomenclature, provide its molecular formula.
user
C28H31N3O4S
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