Using O=C1CCC(=O)N1Br, Cc1ccc(-c2nc3ccccc3c(=O)n2-c2ccccc2)cc1 to produce O=c1c2ccccc2nc(-c2ccc(CBr)cc2)n1-c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.