Using CC(C)(C)OC(=O)N1CCC(C=O)CC1, CNC1=NC(=O)SC1 to produce CNC1=NC(=O)S/C1=C\C1CCN(C(=O)OC(C)(C)C)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.