Using NC1(c2ccccc2O)c2cc(Br)ccc2Oc2cnc(Cl)cc21, N#CBr to produce NC1=NC2(c3ccccc3O1)c1cc(Br)ccc1Oc1cnc(Cl)cc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.