Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any additional words.
Options:
a: CCC(C)C(CN(C)C)c1cc(F)ccc1OC
b: CC(C)c1ccc(C#N)cc1
c: CNC(=O)Oc1cc(C)cc(C)c1
d: COc1ccc([N+](=O)[O-])cc1Cl
e: C=CCOc1ccccc1C(N)=O
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}