Using c1cnc2c(c1)CCNCC2, O=C(O)c1cc2ncc(Br)cn2n1 to produce O=C(c1cc2ncc(Br)cn2n1)N1CCc2cccnc2CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.