Using COc1cc2c(cc1CN[C@H]1CCCN(C(=O)OC(C)(C)C)[C@H]1c1ccccc1)-n1nnnc1CC2 to produce COc1cc2c(cc1CN[C@H]1CCCN[C@H]1c1ccccc1)-n1nnnc1CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.