Using C=CCBr, O=c1ccc2cc(OCCCc3nnnn3C3CCCCC3)ccc2[nH]1 to produce C=CCn1c(=O)ccc2cc(OCCCc3nnnn3C3CCCCC3)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.