Using Nc1ncnc2c1nc(Br)n2Cc1ccccc1, NCCP(=O)([O-])[O-] to produce Nc1ncnc2c1nc(NCCP(=O)(O)O)n2Cc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.