Using [Li]C, CCOC(=O)C=Cc1c(C)n(Cc2ccc(Br)cc2)c2ccc(OC)cc12 to produce CCOC(=O)CC(C)c1c(C)n(Cc2ccc(Br)cc2)c2ccc(OC)cc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.