Using COC(=O)c1cc2c([nH]1)CCC2Cc1ccc(C(C)C)cc1 to produce CC(C)c1ccc(CC2CCc3[nH]c(C(=O)O)cc32)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.