Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any other words.
Options:
a.) CCOC(=O)C1CCc2cc(C3CCCCC3)ccc21
b.) OC1(c2ccc(Cl)c(Cl)c2)c2ccccc2C2=NCCN21
c.) ClC1=C(Cl)C2(Cl)C(CBr)CC1(Cl)C2(Cl)Cl
d.) O=C(Nc1ccccc1)c1ccccc1I
Answer: d
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}