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, or c without using any additional words.
Options:
[a] CCCCn1c(C)cc(=NC(=O)c2ccccc2O)n1-c1ccccc1
[b] CC(CN1CCN(CCOCCO)CC1)CN1c2ccccc2Sc2ccccc21
[c] CCOC(=O)C(Br)CBr
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}