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system
Provide the molecular formula for the IUPAC named substance 2-[(2E)-4-oxo-2-[(E)-[(E)-3-phenylprop-2-enylidene]hydrazinylidene]-1,3-thiazolidin-5-yl]-N-[3-(trifluoromethyl)phenyl]acetamide .
user
C21H17F3N4O2S
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