Using CCCN(CCO)S(=O)(=O)c1ccccc1, COC(=O)C1OC1(c1ccccc1)c1ccccc1 to produce CCCN(CCOC(c1ccccc1)(c1ccccc1)C(O)C(=O)OC)S(=O)(=O)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.