Using CCOC(=O)CC(=O)C(C)(C)N1COC(C)=C(c2ccccc2)C1=O, O=C1CCC(=O)N1Br to produce CCOC(=O)C(Br)C(=O)C(C)(C)N1COC(C)=C(c2ccccc2)C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.