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. NC(=O)c1cc(C(=O)CBr)ccc1O
b. CCC(C)C(CN(C)C)c1ccc(Cl)cc1Cl
c. OCCOCCOCCOCCOc1ccccc1
d. CCN(C(=O)N(CC)c1ccccc1)c1ccccc1
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}