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) CN1C(=O)C2C=CC1c1ccccc12
b) COC(=O)C1CCc2cc(C3CCCCC3)ccc21
c) CCOc1ccccc1N1CCN(CCCc2ccc3c(c2)CCC(=O)N3)CC1
d) CSc1nc(N=[N+]=[N-])nc(NC(C)C)n1
e) CC[N+](C)(C)CCC(C(N)=O)(c1ccccc1)c1ccccc1
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}