Using O=C(Nc1ccncc1)c1cccn(C2CCc3c(Br)cccc32)c1=O, OB(O)c1cccnc1 to produce O=C(Nc1ccncc1)c1cccn(C2CCc3c(-c4cccnc4)cccc32)c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.