Using C[O-], CCCCOc1nc(N)c2nc(Br)n(Cc3cccc(CP(C)(=O)OCC)c3)c2n1 to produce CCCCOc1nc(N)c2nc(O)n(Cc3cccc(CP(C)(=O)OC)c3)c2n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.