Using CCCc1nc(O)c(C(=O)OC)cc1C(=O)OC, O=P(Cl)(Cl)Cl to produce CCCc1nc(Cl)c(C(=O)OC)cc1C(=O)OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.