Using Cc1ccncc1N1CCN(c2cc3c(s2)CN(C(=O)OC(C)(C)C)CC3)C1=O to produce Cc1ccncc1N1CCN(c2cc3c(s2)CNCC3)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.