Using O=C([O-])[O-], CC(C)Nc1nc2cc(Nc3ccnc(Cl)n3)ccc2n1C to produce CC(C)Nc1nc2cc(N(C)c3ccnc(Cl)n3)ccc2n1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.