Using Cc1c(Cc2cc(Cl)cc(Cl)c2)c(NC(=O)OC(C)(C)C)nn1CCO to produce Cc1c(Cc2cc(Cl)cc(Cl)c2)c(N)nn1CCO, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.