Using CCCI, O=c1c2cc(I)cc(I)c2[nH]c(=S)n1CC1CCCO1 to produce CCCSc1nc2c(I)cc(I)cc2c(=O)n1CC1CCCO1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.