Using COC(=O)C1CCN(Cc2ccccc2)CC1c1cccc(Br)c1 to produce O=C1c2ccc(Br)cc2[C@H]2CN(Cc3ccccc3)CC[C@@H]12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.