Using O=C(Nc1cn2nc(I)ccc2n1)C1CC1, Oc1cncc(Br)c1 to produce O=C(Nc1cn2nc(Oc3cncc(Br)c3)ccc2n1)C1CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.