Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, or c without using any additional words.
Options:
a. Oc1ccc(N=Cc2ccccc2)cc1
b. O=C(Cc1ccccc1)OC1=C(OC(=O)Cc2ccccc2)C(=O)OC1=O
c. C=CCOC(=O)c1ccc(C(=O)OCC=C)c(C(=O)OCC=C)c1
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}