Using O=C(Nc1ccc([N+](=O)[O-])cc1)Nc1ccc2c(cnn2CCN2CCCC2)c1 to produce Nc1ccc(NC(=O)Nc2ccc3c(cnn3CCN3CCCC3)c2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.