Using O=c1[nH]nc2c(Br)cccn12, C=Cc1ccc2ncccc2n1 to produce O=c1n(CCc2ccc3ncccc3n2)nc2c(Br)cccn12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.