Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any additional words.
Options:
[a] CC(C)(C)c1ccc(O)cc1
[b] CC(=O)c1c(Cl)c(Cl)c(Cl)c(Cl)c1Cl
[c] CCCOCCN(C(=O)CCl)c1c(CC)cccc1CC
[d] CC1OC(n2cc(F)c(=O)[nH]c2=O)C(O)C1O
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}