Using Nc1ccc(Oc2cccnc2Br)nc1, O=C(O)c1c[nH]c2ccccc12 to produce O=C(Nc1ccc(Oc2cccnc2Br)nc1)c1c[nH]c2ccccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.