Using O=C1NC(=O)c2ccccc21, CC(C)(C)OC(=O)/C=C/c1ccn(S(=O)(=O)c2ccc(CBr)cc2)c1 to produce CC(C)(C)OC(=O)/C=C/c1ccn(S(=O)(=O)c2ccc(CN3C(=O)c4ccccc4C3=O)cc2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.