Using Cc1ccn2c(-c3ccc4cccc(OCC(C)(C)CNC(=O)OC(C)(C)C)c4n3)nnc2c1 to produce Cc1ccn2c(-c3ccc4cccc(OCC(C)(C)CN)c4n3)nnc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.