Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any other words.
Options:
[a] BrCCc1ccccc1
[b] Oc1cccc(Cl)c1
[c] O=C1CCCCCO1
[d] O=[N+]([O-])c1cc([N+](=O)[O-])cc([N+](=O)[O-])c1
[e] CC1COn2c1nc1ccccc1c2=O
Answer: c
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}