Using Cc1c([C@@H](O)CN2CCCC2CNC(=O)OC(C)(C)C)ccc2c1COC2=O to produce Cc1c([C@@H](O)CN2CCCC2CN)ccc2c1COC2=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.