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, or d without using any additional words.
Options:
(a) O=Cc1cccc(Br)c1
(b) CC(C)(O)CC(C)(O)c1ccc(Cl)cc1
(c) Nc1ccc([N+](=O)[O-])c(N)c1
(d) CN(C)C(=O)Nc1ccc(Oc2ccc(Cl)cc2)cc1
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}