Using CO[C@H]1CN(C(=O)OC(C)(C)C)CC[C@H]1Nc1nc2c(-c3ccc(F)c(F)c3)cccn2n1 to produce CO[C@H]1CN(c2cc(C)ncn2)CC[C@H]1Nc1nc2c(-c3ccc(F)c(F)c3)cccn2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.