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 other words.
Options:
(a) Nc1ccc(Nc2ccccc2)cc1
(b) CCCOP(=O)(CC)SC
(c) O=C(Nc1ccc(Cl)cc1)c1cc(Cl)cc(-c2ccc(Cl)cc2)c1O
(d) Nc1ccc(S(=O)(=O)Nc2ccccn2)cc1
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}