Using C#CCc1c(C)nc2c(OC(NC(=O)CNC(=O)OC(C)(C)C)c3ccccc3C)cccn12 to produce C#CCc1c(C)nc2c(OC(NC(=O)CN)c3ccccc3C)cccn12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.