Using COCCCCl, Cn1cc(-c2cccc(-c3ncc(-c4cn[nH]c4)cn3)c2)cn1 to produce COCCCn1cc(-c2cnc(-c3cccc(-c4cnn(C)c4)c3)nc2)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.