Using COC/C=C/c1cc(Br)cc(CN(C(=O)[C@@H]2CN(C(=O)OC(C)(C)C)CC[C@H]2c2ccn(C)c(=O)c2)C2CC2)c1 to produce COC/C=C/c1cc(Br)cc(CN(C(=O)[C@@H]2CNCC[C@H]2c2ccn(C)c(=O)c2)C2CC2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.