Using COC(=O)c1ccccc1CN(CCc1ccc(Cl)cc1)C1CCN(c2nnc(N)[nH]2)CC1 to produce Nc1n[nH]c(N2CCC(N(CCc3ccc(Cl)cc3)Cc3ccccc3C(=O)O)CC2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.