Using O=C1CCC(=O)N1Br, CCOC(=O)Cn1c(=O)c2cc(C)ccc2n(Cc2ccc(Cl)c(Cl)c2)c1=O to produce CCOC(=O)Cn1c(=O)c2cc(CBr)ccc2n(Cc2ccc(Cl)c(Cl)c2)c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.