Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any additional words.
Options:
a: C[Si](Cn1cncn1)(c1ccc(F)cc1)c1ccc(F)cc1
b: CCCSP(C)(=O)SCCC
c: CC(O)CNCC(C)O
d: COP(=S)(OC)SSP(=S)(OC)OC
e: CCOP(=O)(OCC)OC(=CC(=O)OC)CC(=O)OC
Answer: c
Task: Please answer the multiple choice question.
Question: Which molecule has the highest {acute_toxicity__names__noun}?
Constraint: Even if you are {#uncertain|not sure!}, you must pick either {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%acute_toxicity%}
Answer: {%multiple_choice_result}