Using COC(=O)c1ccc2[nH]cc(-c3cncc(N4CCC(N)CC4)n3)c2c1 to produce NC1CCN(c2cncc(-c3c[nH]c4ccc(C(=O)O)cc34)n2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.