Using CCn1c(=O)c2[nH]c(C(C)C)nc2n(CC)c1=O, S=P12SP3(=S)SP(=S)(S1)SP(=S)(S2)S3 to produce CCn1c(=S)c2[nH]c(C(C)C)nc2n(CC)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.