Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any additional words.
Options:
a FC(F)(F)C(F)(F)OC(F)(F)C(F)(F)F
b Cn1c(-c2ccccc2)cc(-c2ccccc2)[n+]1C
c C=C(OP(=O)(OC)OC)P(=O)(OC)OC
d c1ccc(-c2nnn[nH]2)cc1
e O=C1CCCCCC=CCCCCCCCCO1
Answer: a
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}