Using Cc1cn2cccc(O)c2n1, CS(=O)(=O)OCCc1c(Cl)cccc1Cl to produce Cc1cn2cccc(OCCc3c(Cl)cccc3Cl)c2n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.