Using C#CCCCCCCCC, CCCCCCCCCCc1c(Br)sc2c1sc1ccsc12 to produce CCCCCCCCC#Cc1cc2sc3c(CCCCCCCCCC)csc3c2s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.