Using COC(=O)c1ccc2nc(CC(C)C)c(CNC(=O)OC(C)(C)C)c(-c3ccccc3)c2c1 to produce CC(C)Cc1nc2ccc(C(=O)O)cc2c(-c2ccccc2)c1CNC(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.