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, d, or e without using any additional words.
Options:
[a] CCCCC(CC)COCCCN
[b] ClCC1COC(C(Cl)(Cl)Cl)O1
[c] CC1(C)COCCO1
[d] O=c1nc(-c2ccccc2)c2cc(Cl)ccc2n1CC1CC1
[e] CN1CCOCC1
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}