Using Fc1ccc(Oc2cc(Oc3cccnc3)cc3[nH]c(-c4ccccn4)nc23)cc1, S=C=S to produce Fc1ccc(Oc2cc(Oc3cccnc3)cc3[nH]c(S)nc23)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.