Using CCOC(OCC)P(=O)(CCCNCc1cc(Cl)cc(Cl)c1)OCC to produce CCOC(OCC)P(=O)(O)CCCNCc1cc(Cl)cc(Cl)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.