Using CCOC(=O)/C(=C\C[C@H](NC(=O)OC(C)(C)C)C(=O)OC(C)(C)C)CCCF to produce CC(C)(C)OC(=O)N[C@@H](C/C=C(/CCCF)C(=O)O)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.