Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any other words.
Options:
[a] CC(=O)c1ccccc1[N+](=O)[O-]
[b] CC(C)(C)CC(C)(C)c1ccc(O)cc1
[c] COP(=S)(OC)Oc1ccc([N+](=O)[O-])c(SC(C)C)c1
[d] Cc1ccccc1N(CCO)CCO
Answer: d
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}