Using O=c1[nH]c2c3ccccc3c(=Cc3c[nH]cn3)c2n2ccnc12 to produce O=c1[nH]c2c(n3ccnc13)C(Cc1c[nH]cn1)c1ccccc1-2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.