Using CCOC(Cn1nc(-c2cnn(Cc3ccc(OC)cc3)c2)cc1N)OCC to produce COc1ccc(Cn2cc(-c3cc4[nH]ccn4n3)cn2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.