Using BrCc1ccccc1, COC(=O)/C=C/c1ccc2c(c1)C(=O)N(Cc1ccccc1)C1(CCNCC1)O2 to produce O=C(O)/C=C/c1ccc2c(c1)C(=O)N(Cc1ccccc1)C1(CCN(Cc3ccccc3)CC1)O2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.