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: CCN(CC)C(=O)c1nnn(-c2ccccc2)c1C
b: C=CC(=O)OCCCOCC
c: CN(N=O)C(=O)C(=O)N(C)N=O
d: O=S(=O)(CCCl)COCS(=O)(=O)CCCl
e: CC(C)NC(=N)NC(C)C
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}