Using CCCCc1cccc(=O)n1Cc1ccc(C(=O)Nc2ccccc2C(=O)OC)cc1 to produce CCCCc1cccc(=O)n1Cc1ccc(C(=O)Nc2ccccc2C(=O)O)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.