Using CC(C)(C)OC(=O)NCCCNCC(=O)O, COC(=O)C(N=C=O)c1ccccc1 to produce COC(=O)C(NC(=O)N(CCCNC(=O)OC(C)(C)C)CC(=O)O)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.