Using Cc1c(C(=O)C(N)=O)c2c(OCC(=O)O)cccc2n1Cc1cccc(-c2ccccc2)c1, CC(C)Br to produce Cc1c(C(=O)C(N)=O)c2c(OCC(=O)OC(C)C)cccc2n1Cc1cccc(-c2ccccc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.