Using COC(=O)C(=O)NNC(=O)N1CCC(NC(=O)OC(C)(C)C)CC1 to produce COC(=O)c1nnc(N2CCC(NC(=O)OC(C)(C)C)CC2)o1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.