Using CCCCCCCCCCc1ccc(CNc2ccc(C(=O)OCC)cc2)cc1 to produce CCCCCCCCCCc1ccc(CNc2ccc(C(=O)O)cc2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.