Using CCOCC(=O)NCC(=O)c1ccc2[nH]c3c(cc(-c4ccc(Cl)cc4Cl)c(=O)n3C)c2c1 to produce CCOCc1ncc(-c2ccc3[nH]c4c(cc(-c5ccc(Cl)cc5Cl)c(=O)n4C)c3c2)o1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.