Using O=C(Cc1cccnc1)c1ccc(Cl)cc1Cl, C[S+](C)CCCl to produce O=C(c1ccc(Cl)cc1Cl)C1(c2cccnc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.