Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any additional words.
Options:
[a] CC1(NC(N)=O)CCCC1
[b] CCOC(=O)C1CCc2cc(C3CCCCC3)ccc21
[c] CCCCn1c(=O)n(CCC)c(=O)c2[nH]c(C)nc21
[d] C1CN2CCN1CC2
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}