Using COCCOCOc1nc(Cl)nc2cc(Cl)ccc12, CCOC(=O)c1cn[nH]c1 to produce CCOC(=O)c1cnn(-c2nc3cc(Cl)ccc3c(=O)[nH]2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.