Using O=C(c1ccc(Oc2ncccc2Br)cc1)c1nc2ccccc2[nH]1, O=C1C=CCC1 to produce O=C1C=C(c2cccnc2Oc2ccc(C(=O)c3nc4ccccc4[nH]3)cc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.