Using Cc1cc2c(O)cccc2n1Cc1ccccc1-c1ccccc1, COC(=O)CBr to produce COC(=O)COc1cccc2c1cc(C)n2Cc1ccccc1-c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.