Using OB(O)c1cccnc1, Brc1cccc(Br)c1OCc1ccccc1 to produce c1ccc(COc2c(-c3cccnc3)cccc2-c2cccnc2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.