Using O=P(Cl)(Cl)Cl, COc1cc2c(=O)[nH]cnc2cc1OCc1ccccc1 to produce COc1cc2c(Cl)ncnc2cc1OCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.