Using O=C(Nc1cc[n+](CCc2c[nH]c3ccccc23)cc1)c1ccccc1 to produce O=C(NC1CCN(CCc2c[nH]c3ccccc23)CC1)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.