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