Using O=c1[nH]c2ncccc2n1C1CCNCC1, O=C(O)c1ccnc(Br)c1 to produce O=C(O)c1ccnc(N2CCC(n3c(=O)[nH]c4ncccc43)CC2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.