Using CC(C)(C)OC(=O)N1CC[C@H](NC(=O)c2ncc3cc(Cl)ccc3n2)C1 to produce O=C(N[C@H]1CCNC1)c1ncc2cc(Cl)ccc2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.