Using NNc1ncc(-c2ccccc2)nc1Br, O=C(n1ccnc1)n1ccnc1 to produce O=c1[nH]nc2c(Br)nc(-c3ccccc3)cn12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.