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 additional words.
Options:
a. C1CC2OC2CC1C1CO1
b. CC(C)(C)c1cc(CN2CCN(Cc3cc(C(C)(C)C)c(O)c(C(C)(C)C)c3)CC2)cc(C(C)(C)C)c1O
c. CCOC(=O)C(O)(c1ccc(Cl)cc1)c1ccc(Cl)cc1
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}