Using CC(=O)OC(C)=O, CCOC(=O)c1sc(SC)c2c1CCC(N=[N+]=[N-])C2=O to produce CCOC(=O)c1sc(SC)c2c1CCC(NC(C)=O)C2=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.