Using O=C1CCC(=O)N1Br, COC(=O)c1sc(C)nc1-c1ccc(OC)cc1 to produce COC(=O)c1sc(CBr)nc1-c1ccc(OC)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.