Using CNN, CCOC(=O)c1ncn(Cc2ccc(C(=O)c3ccc(Cl)cc3)cc2)c1C=O to produce Cn1ncc2c(ncn2Cc2ccc(C(=O)c3ccc(Cl)cc3)cc2)c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.