Using CCCN(CC1CC1)c1cc(C(=O)Nc2ccc(C=O)cc2C)ncn1, CC(C)(C)OC(=O)CCN to produce CCCN(CC1CC1)c1cc(C(=O)Nc2ccc(CNCCC(=O)OC(C)(C)C)cc2C)ncn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.