Using N=C(NCCC[C@H](NC(=O)OCc1ccccc1)C(=O)O)N[N+](=O)[O-], CCNC(=O)[C@@H]1CCCN1 to produce CCNC(=O)[C@@H]1CCCN1C(=O)[C@H](CCCNC(=N)N[N+](=O)[O-])NC(=O)OCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.