Using CN(C(=O)c1ccc(OCCCN2CCN(C(=O)OC(C)(C)C)CC2)c(F)c1)c1ccc(Cl)cc1 to produce CN(C(=O)c1ccc(OCCCN2CCNCC2)c(F)c1)c1ccc(Cl)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.