Using COC(=O)[C@H](CO)NC(=O)NC1CCN(C(=O)OC(C)(C)C)CC1 to produce COC(=O)c1cn(C2CCN(C(=O)OC(C)(C)C)CC2)c(=O)[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.