Using CC(=O)n1cc(CC2CCCN2C(=O)OC(C)(C)C)c2ccc(F)cc21 to produce CC(C)(C)OC(=O)N1CCCC1Cc1c[nH]c2cc(F)ccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.