Using CC1(O)CCNC1, CS(=O)(=O)OCC(c1ccccc1)c1ccccc1 to produce CC1(O)CCN(CC(c2ccccc2)c2ccccc2)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.