Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are not sure, you must pick either a, b, or c without using any additional words.
Options:
a: Clc1ccc(Cc2ccc(Cl)cc2)cc1
b: CN1CCC(c2c[nH]c3ccccc23)C1
c: CCCC(C)(Oc1ccc(Cc2ccc(Cl)cc2)cc1)C(=O)OCc1cccnc1
Answer: b
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}