Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any other words.
Options:
a. CNCCC=C1c2ccccc2CCc2ccccc21
b. O=[N+]([O-])c1cc(Br)cc2[nH]c(C(F)(F)F)nc12
c. OCCN1CCN(CCO)CC1
d. CN(C)C(=O)n1c(Br)nc(Br)c1Br
e. N#CCCNCCC#N
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}