Using Cc1ccc2c(c1)C(C)(C)CCC2(C)C, COC(=O)c1ccc(CCl)o1 to produce COC(=O)c1ccc(Cc2cc3c(cc2C)C(C)(C)CCC3(C)C)o1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.