Using C=CC(=O)OC(C)(C)C, Nc1ncc(Br)cc1CN1CCCCC1 to produce CC(C)(C)OC(=O)/C=C/c1cnc(N)c(CN2CCCCC2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.