You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the SMILES representation of the molecule with IUPAC name 2-ethyl-2-[(2,3,4-trifluorophenyl)carbamoylamino]butanoic acid ?
user
CCC(CC)(NC(=O)NC1=CC=C(F)C(F)=C1F)C(=O)O
assistant