Using COC(=O)[C@@H](NC(=O)NC1CCN(C(=O)OC(C)(C)C)CC1)C(C)C to produce CC(C)c1cn(C2CCNCC2)c(=O)[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.