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, d, or e without using any other words.
Options:
a: O=C(Cl)c1ccc(C(=O)Cl)cc1
b: Cn1c(=N)oc2ccc(Cl)cc21
c: COP(=S)(Oc1cc(Cl)c(Br)cc1Cl)c1ccccc1
d: Cc1cc(C(=O)c2ccccc2)ccc1N
e: CCOc1ccc(C=O)cc1
Answer: b
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}