Using CC1(C)c2cc(Br)ccc2-c2cc3c(cc21)C(=O)c1cc(Br)ccc1C3 to produce CC1(C)c2cc(Br)ccc2-c2cc3cc4ccc(Br)cc4cc3cc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.