Using CCN=C=NCCCN(C)C, CCOC(=O)C(C)(C)Oc1cccc(C(=O)O)c1 to produce CCOC(=O)C(C)(C)Oc1cccc(C(=O)NC)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.