You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3S,4S)-1-[(5-ethyl-1,3-thiazol-2-yl)methylcarbamoyl]-4-(trifluoromethyl)pyrrolidine-3-carboxylic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C13H16F3N3O3S
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