Using CCOC(=O)COc1ccc2c(c1)C[C@H](NC(=O)OC(C)(C)C)CC2 to produce CCOC(=O)COc1ccc2c(c1)C[C@H](N)CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.