Using CCCCCc1ccc(S(=O)(=O)NC2(CC(=O)OCC)CCN(C(=O)OCc3ccccc3)C2)cc1 to produce CCCCCc1ccc(S(=O)(=O)NC2(CC(=O)OCC)CCNC2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.