Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any other words.
Options:
[a] Cc1cnc(C)c(C)n1
[b] CCNc1nc(NC(C)C)nc(SC)n1
[c] CCNc1nc(NC(C)(C)C)nc(OC)n1
[d] C1CCC(NC2CCCCC2)CC1
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}