Using COc1ccc(C(=O)C=Cc2ccc(NCc3ccccc3)cc2)cc1 to produce COc1ccc(C(O)C=Cc2ccc(NCc3ccccc3)cc2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.