Using CC(C)(C)OC(=O)N1CCC2(CC1)NC(=O)NC2=O, COS(=O)(=O)OC to produce CN1C(=O)NC2(CCN(C(=O)OC(C)(C)C)CC2)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.