Using CC(C)(C)OC(=O)NCC=O, COc1c(C)ccc2c1C[C@@H](C1CCNCC1)O[C@H]2CNC=O to produce COc1c(C)ccc2c1C[C@@H](C1CCN(CCNC(=O)OC(C)(C)C)CC1)O[C@H]2CNC=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.