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, or c without using any other words.
Options:
a. Cc1cccc([N+](=O)[O-])c1[N+](=O)[O-]
b. CC(C)(CNc1ccc(N=O)cc1)[N+](=O)[O-]
c. COc1cc(Oc2ccc(Cl)cc2Cl)ccc1[N+](=O)[O-]
Answer: c
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}