Using O=[N+]=O, O=P1(c2ccccc2)c2ccccc2CN1c1ccccc1 to produce O=[N+]([O-])c1ccc(N2Cc3ccccc3P2(=O)c2ccccc2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.