Using CC(C)Cn1c(=O)n(C)c(=O)c2c(Br)c(C(O)c3nc4ccccc4n3C)sc21 to produce CC(C)Cn1c(=O)n(C)c(=O)c2c(Br)c(C(=O)c3nc4ccccc4n3C)sc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.