Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any additional words.
Options:
a: CNN=Nc1ccc(I)cc1
b: CCCCCCC(C=O)=Cc1ccccc1
c: CC(Cc1ccccc1)NN
d: ClC1=C(Cl)C2C(C1)C1(Cl)C(Cl)=C(Cl)C2(Cl)C1(Cl)Cl
Answer: b
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}