What is the major hydrolysis product of 2,2,2-trifluoroethyl 2-acetamido-3-phenylprop-2-enoate?
Plain hydrolysis would just replace trifluorexthoxide with hydroxide.

But you might want to consider that your staring material in equilibrium with another tautomer:



Deprotonation of the $\ce{OH}$ in the right structure, followed by an intramolecular reaction (transesterification/lactonization) in which $\ce{CF3CH2O-}$ is kicked out should give rise to an oxazolone.