Using CNC(=O)[C@@H](N)C(C)(C)C, O=C(O)c1cc(OC2COC2)c(Cl)cn1 to produce CNC(=O)[C@@H](NC(=O)c1cc(OC2COC2)c(Cl)cn1)C(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.