Using CCCCc1cn(C(C)(C)C)s/c1=N\C(=O)C1CCN(C(=O)OC(C)(C)C)C1 to produce CCCCc1cn(C(C)(C)C)s/c1=N\C(=O)C1CCNC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.