Using COCCBr, c1cnc2ccc(Cc3nnc4ccc(-c5cn[nH]c5)nn34)cc2c1 to produce COCCn1cc(-c2ccc3nnc(Cc4ccc5ncccc5c4)n3n2)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.