Using Nc1nc2[nH]nc(-c3ccccc3)c2s1, COCCOCC(=O)Cl to produce COCCOCC(=O)Nc1nc2[nH]nc(-c3ccccc3)c2s1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.