Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any additional words.
Options:
a.) COC(=O)C1=CCC23CCC(C(C)(C=CC=C(C)C(=O)O)OC2=O)C3(OC(C)=O)CC1
b.) CC(O)C1CC=CCC1
c.) CCSC(C)CC=O
d.) CN(N=O)c1ccc(N=Nc2ccccc2)cc1
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}