Using O=C1CCc2c(-c3ccccc3Cl)cc(Cl)nc2N1c1ccccc1Cl to produce O=c1ccc2c(-c3ccccc3Cl)cc(Cl)nc2n1-c1ccccc1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.