Using c1cnc(N2CCNCC2)nc1, CCOC(=O)CC(C)(C)NC(=O)NCCCCBr to produce CC1(C)CC(=O)OC(=NCCCCN2CCN(c3ncccn3)CC2)N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.