Using CNNC1CCC1, COC(=O)[C@@H](NC(=O)OC(C)(C)C)C(C)=O to produce Cc1c(NC(=O)OC(C)(C)C)c(=O)n(C2CCC2)n1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.