Using CCOC(=O)CS, COC(=O)c1ccc(C=O)c([N+](=O)[O-])c1 to produce CCOC(=O)c1cc2ccc(C(=O)OC)cc2s1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.