Using O=C1CCC(=O)N1Br, CC(C)(C)OC(=O)Nc1nc(C2CC2)cs1 to produce CC(C)(C)OC(=O)Nc1nc(C2CC2)c(Br)s1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.