Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any additional words.
Options:
(a) ClCC=C(Cl)CCl
(b) CCC(=CC(=NO)C(N)=O)C(C)[N+](=O)[O-]
(c) CCCCCCC(=O)NO
(d) O=C(O)c1ccccc1C(=O)Nc1cccc2ccccc12
Answer: d
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}