Using CC(C)(O)CNC1=NC(=O)S/C1=C\C1CCN(C(=O)OC(C)(C)C)CC1 to produce CC(C)(O)CNC1=NC(=O)S/C1=C\C1CCNCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.