Using NCCC(=O)N1CCc2nc(NC3Cc4ccccc4C3)ncc2C1, O=C(O)c1cn[nH]n1 to produce O=C(NCCC(=O)N1CCc2nc(NC3Cc4ccccc4C3)ncc2C1)c1c[nH]nn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.