Using S=P12SP3(=S)SP(=S)(S1)SP(=S)(S2)S3, CCc1nc2c([nH]1)c(=O)ncn2CC to produce CCc1nc2c([nH]1)c(=S)ncn2CC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.