Using CCNC(=O)n1ccc2cc(Oc3ccnc(N(C(=O)Oc4ccccc4)C(=O)Oc4ccccc4)c3)ccc21, COC(=O)CN to produce CCNC(=O)n1ccc2cc(Oc3ccnc(NC(=O)NCC(=O)O)c3)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.