Using SCCCS, CCCCCCCCCCCCOc1ccc(C=O)cc1OCCCCCCCCCCCC to produce CCCCCCCCCCCCOc1ccc(C2SCCCS2)cc1OCCCCCCCCCCCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.