Using C=CCBr, C1=CC2=C(CCCC2)n2c3c(c4cnccc42)CCC=C13 to produce C=CCC1CCC2=C(C=CC3=CCCc4c3n2c2ccncc42)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.