Using O=C(Cc1ccc(-n2cnnn2)cc1)N1CC2CC1CN2C(=O)OCc1ccccc1 to produce O=C(Cc1ccc(-n2cnnn2)cc1)N1CC2CC1CN2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.