Using COc1ccc(C(=O)c2c(C)n(C(C)=O)c(=O)n2C(C)=O)cc1, O=C1CCC(=O)N1Br to produce COc1ccc(C(=O)c2c(CBr)n(C(C)=O)c(=O)n2C(C)=O)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.