Task: Answer the following question about the molecule with SMILES CS(=O)(=O)OCCCCOS(C)(=O)=O.
Description: What is the definition of this compound's USAN stem?
Answer: antineoplastics, alkylating agents (methane sulfonate derivatives)
Task: Answer the following question about the molecule with {SMILES__description} {SMILES#}.
{#Description|Question|Request!}: {quest#}
{#Result|Answer|Completion!}: {answ#}
CS(=O)(=O)OCCCCOS(C)(=O)=O
CS(=O)(=O)OCCCCOS(C)(=O)=O
4-methylsulfonyloxybutyl methanesulfonate
What is the definition of this compound's USAN stem?