Using CCOC(=O)C1(c2ccc(-c3ccc(-c4onc(C)c4CC(=O)OCc4ccccc4)cc3)cc2)CC1 to produce CCOC(=O)C1(c2ccc(-c3ccc(-c4onc(C)c4CC(=O)O)cc3)cc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.