Using O=c1[nH]cc2c(c1-c1ccc(Cl)cc1)Nc1ccccc1S2 to produce Oc1ncc2c(c1-c1ccc(Cl)cc1)Nc1ccccc1S2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.