Using Cc1nc(CC2CCN(C(=O)OC(C)(C)C)CC2)nc(C(=O)OC(C)(C)C)c1OCc1ccccc1 to produce Cc1nc(CC2CCNCC2)nc(C(=O)OC(C)(C)C)c1OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.