Using COc1ccc(COC2CN(C(=O)OC(C)(C)C)CCC2c2ccc(F)cc2)cc1 to produce COc1ccc(COC2CNCCC2c2ccc(F)cc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.