Using N=C(N)c1cc[nH]n1, Cc1cccnc1CN(CCCCN)Cc1ncccc1C to produce Cc1cccnc1CN(CCCCNC(=N)N)Cc1ncccc1C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.