Using Nc1nc2c(s1)CCNCC2, Cc1nc(Br)c([N+](=O)[O-])c(=O)[nH]1 to produce Cc1nc(N2CCc3nc(N)sc3CC2)c([N+](=O)[O-])c(=O)[nH]1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.