Using Cn1c(C2CC2)nc2ccc(-n3ccc(OCc4csc(Br)n4)cc3=O)cc21, OB(O)C1CC1 to produce Cn1c(C2CC2)nc2ccc(-n3ccc(OCc4csc(C5CC5)n4)cc3=O)cc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.