Using O=C1CCC(=O)N1Br, CCOC(=O)C(=NOC)c1csc(NC=O)n1 to produce CCOC(=O)C(=NOC)c1nc(NC=O)sc1Br, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.