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 other words.
Options:
a O=C(O)Cc1ccccc1Nc1c(Cl)ccc(O)c1Cl
b ON=CC(O)(C#Cc1ccccc1)c1ccccc1
c CCCCOP(=O)(CC)SC
d O=C1C=CC(=O)N1c1ccccc1Cl
e CNC(=O)ON=C(C)C(C)(C)[N+](=O)[O-]
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}