Using Cn1cc(Br)c2ncnc(Cl)c21, CCc1cnc(N2CCC(O)CC2)nc1 to produce CCc1cnc(N2CCC(Oc3ncnc4c(Br)cn(C)c34)CC2)nc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.