Using O=P(Cl)(Cl)Cl, COc1ccc(-c2c(C)nn3c(O)cc(C)nc23)c(OC)c1 to produce COc1ccc(-c2c(C)nn3c(Cl)cc(C)nc23)c(OC)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.