Task: Answer the following question about the molecule with SMILES CCOP(=O)(OCC)SCC[N+](C)(C)C.[I-].
Request: What is the molecular weight of this compound's parent molecule?
Completion: 256.33
Task: Answer the following question about the molecule with {SMILES__description} {SMILES#}.
{#Description|Question|Request!}: {quest#}
{#Result|Answer|Completion!}: {answ#}
CCOP(=O)(OCC)SCC[N+](C)(C)C.[I-]
CCOP(=O)(OCC)SCC[N+](C)(C)C.[I-]
2-diethoxyphosphorylsulfanylethyl(trimethyl)azanium;iodide
What is the molecular weight of this compound's parent molecule?