Using CCOC(=O)c1c(-c2ccc(OC)c(OC)c2)c2cc(OC)c(OC)cc2[nH]c1=O, CC(C)Br to produce CCOC(=O)c1c(OC(C)C)nc2cc(OC)c(OC)cc2c1-c1ccc(OC)c(OC)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.