Using CCCc1nc(C)c(-c2ccc(O)cc2)c(=O)n1Cc1ccc(-c2ccccc2C#N)cc1, CCC(C)Br to produce CCCc1nc(C)c(-c2ccc(OC(C)CC)cc2)c(=O)n1Cc1ccc(-c2ccccc2C#N)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.