Using CCO, CCOC(=O)C(=O)C(C#N)CCc1csc(-c2ccc(Br)cc2)n1 to produce O=C1NC(=O)C(CCc2csc(-c3ccc(Br)cc3)n2)=C1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.