Using COc1ccc(C(=O)NC2(C(=O)O)Cc3ccccc3C2)cc1C(O)COc1cccc(C)c1 to produce COc1ccc(C(=O)NC2(C(=O)O)Cc3ccccc3C2)cc1CCOc1cccc(C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.