Using CSC(=N)c1cccs1, O=[N+]([O-])c1ccc2ccn(CCCCn3ccnc3)c2c1 to produce N=C(Nc1ccc2ccn(CCCCn3ccnc3)c2c1)c1cccs1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.