Using COC(=O)CN1CCc2c(-c3ccc(Cl)cc3)nn(Cc3ccccc3)c2CC1 to produce OCCN1CCc2c(-c3ccc(Cl)cc3)nn(Cc3ccccc3)c2CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.