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. C=CC(=O)OCCCCOC(=O)C=C
b. Oc1ccc(C(c2ccc(O)cc2)c2ccccn2)cc1
c. O=S(=O)(F)CCCl
d. N#CC(Br)Br
e. CCCC(=O)N(C)C(=O)ON=C1CSCCS1
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}