You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance N-(cyanomethyl)-4-methyl-2-[[2,2,2-trifluoro-1-[4-(1,3-thiazol-2-yl)phenyl]ethyl]amino]pentanamide .
user
C19H21F3N4OS
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