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: CCc1cccc(CC)c1N
b: CC(c1ccccc1)N(C)N=O
c: Oc1ccc(Nc2ccc3ccccc3c2)cc1
d: NC(=S)c1c(Cl)cccc1Cl
e: CN1CCCCC1CCN1c2ccccc2Sc2ccc(Br)cc21
Answer: c
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}