Using CCOC(=O)C(Cc1ccc(N)nc1)c1cn(C2CCN(c3ccccc3)C2=O)cn1 to produce Nc1ccc(CC(C(=O)O)c2cn(C3CCN(c4ccccc4)C3=O)cn2)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.