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.) C=CCOC(=O)C=CC(=O)OCC=C
b.) CCCC=C(CC)C(=O)O
c.) CCCCCC(O)C=CC1C(O)CC(=O)C1CC=CCCCC(=O)O
d.) O=C(CCl)OC1=C(OC(=O)CCl)C(=O)OC1=O
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}