Using CC(C)(C)OC(=O)N1CCCNCC1, CCOC(=O)c1cc2cc(C(=O)O)ccc2[nH]1 to produce CCOC(=O)c1cc2cc(C(=O)N3CCCN(C(=O)OC(C)(C)C)CC3)ccc2[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.