Using CC(C)(C)OC(=O)NCCC(=O)c1cccc(S(=O)(=O)CC2CCS(=O)(=O)CC2)c1 to produce NCCC(=O)c1cccc(S(=O)(=O)CC2CCS(=O)(=O)CC2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.