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, c, d, or e without using any other words.
Options:
a. O=P(Oc1ccccc1)(Oc1ccccc1)OC1CCCCC1
b. C#CCOc1cccc(OC(=O)NC)c1
c. CCOP(=S)(CC)Oc1ccc([N+](=O)[O-])cc1Cl
d. Oc1cccc(O)c1
e. O=c1[nH]nc(-c2ccccc2)c2conc12
Answer: e
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}