Using CCC(CC)c1cc(C)nn2c(I)c(C)nc12, Cc1csc2cnccc12 to produce CCC(CC)c1cc(C)nn2c(-c3sc4cnccc4c3C)c(C)nc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.