Using C=CCC(=O)OC, Cc1ccc(CNc2ccc3c(Br)cccc3n2)o1 to produce COC(=O)C/C=C/c1cccc2nc(NCc3ccc(C)o3)ccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.