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, d, or e without using any additional words.
Options:
a: FC(F)(Cl)C(Cl)Cl
b: CC(C)(C)C(O)C(=Cc1ccc(Cl)cc1)n1cncn1
c: COP(=S)(Oc1ccc([N+](=O)[O-])cc1)Oc1ccc([N+](=O)[O-])cc1
d: COP(C)(=S)SCN1C(=O)c2ccccc2C1=O
e: CC1(C)C(=O)N(Br)C(=O)N1Cl
Answer: e
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}