for the following products
HOTT | N,N,N',N'-Tetramethyl-S-(1-oxido-2-pyridyl)thiuronium hexafluorophosphate | S-(1-Oxido-2-pyridyl)-thio-N,N,N',N'-tetramethyluronium hexafluorophosphate and S-(1-Oxido-2-pyridyl)-N,N,N',N'-tetramethylthiuronium hexafluorophosphate