Using COC(=O)C1CNCCN1C(=O)OC(C)(C)C, OB(O)c1ccc(Cl)cc1 to produce COC(=O)C1CN(C(=O)OC(C)(C)C)CCN1c1ccc(Cl)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.