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: Cc1ccc(S(=O)(=O)C=CC#N)cc1
b: CC(=O)C(Cl)C(=O)OC(C)c1ccccc1
c: C#CC(C)(C)NC(=O)C=Cc1cc(OC)c(OC)c(OC)c1
d: OCNC(=S)c1c(Cl)cccc1Cl
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}