Using CCCNN, O=C1C(=Cc2ccc(Cl)cc2)CSCC1=Cc1ccc(Cl)cc1 to produce CCCN1N=C2C(=Cc3ccc(Cl)cc3)CSCC2C1c1ccc(Cl)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.