Using O=C(O)CCc1ccc(-c2nc(=O)c3ccccc3s2)nc1, CCN(CC)CC to produce NC(=O)CCc1ccc(-c2nc(=O)c3ccccc3s2)nc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.