Using c1cnc(N2CCNCC2)nc1, O=C1c2cc(F)ccc2S(=O)(=O)N1CCCBr to produce O=C1c2cc(F)ccc2S(=O)(=O)N1CCCN1CCN(c2ncccn2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.