Using Clc1nc(-c2ccccc2)c(-c2ccccc2)o1, O=C(O)CS to produce O=C(O)C(S)c1nc(-c2ccccc2)c(-c2ccccc2)o1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.