Using CCCN(CCC)c1ccc(S(=O)(=O)NCCCCC(=O)O)cc1 to produce CCCN(CCC)c1ccc(S(=O)(=O)N2CCCCC2=O)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.