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 additional words.
Options:
a CCN(CCO)c1ccccc1
b CCCCCCCc1cc(C)c(O)c(C)c1
c CCCSC(=O)Oc1c(C(C)CC)cc([N+](=O)[O-])cc1[N+](=O)[O-]
d CC(C)(C)c1ccc(C(=O)O)cc1
e CCOC(=O)Cc1ccccc1
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}