Using O=C(N[C@H]1CCN(c2nccn3cccc23)C1)c1ncc(C2=CCCC2)cn1 to produce O=C(N[C@H]1CCN(c2nccn3cccc23)C1)c1ncc(C2CCCC2)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.