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, or c without using any other words.
Options:
a) CCCCCc1cc(O)c2c(c1)OC(C)(C)C1CC=C(C)CC21
b) O=C(O)C(c1ccc(Cl)cc1)c1ccc(Cl)cc1
c) CC(C(c1ccc(Cl)cc1)c1ccc(Cl)cc1)[N+](=O)[O-]
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}