Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any additional words.
Options:
a.) COc1ccccc1C=Nc1ccccc1C(=O)O
b.) Nc1ccc([N+](=O)[O-])cc1N
c.) CC(C)(C(N)=O)c1ccccc1
d.) CCc1cccc(CC)c1N(CNC(C)=O)C(=O)CCl
e.) CN(C)C(=O)Nc1ccccc1
Answer: a
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}