Using CN(C(=O)OC(C)(C)C)[C@H]1CN(C(=O)C2CCN(C(=O)C3(C)CC3)CC2)C[C@@H]1c1ccc(Cl)c(Cl)c1 to produce CN[C@H]1CN(C(=O)C2CCN(C(=O)C3(C)CC3)CC2)C[C@@H]1c1ccc(Cl)c(Cl)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.