Using CCCC(=O)c1cc(C(Nc2ccc(C(=O)OC)cc2)C2CCCCC2)c(CC)s1 to produce CCCC(=O)c1cc(C(Nc2ccc(C(=O)O)cc2)C2CCCCC2)c(CC)s1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.