Using COc1cc2nc(Cl)nc(NC3CCN(C(=O)OC(C)(C)C)CC3)c2cc1OC to produce COc1cc2nc(Cl)nc(NC3CCNCC3)c2cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.