Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any other words.
Options:
a. Cc1ccc(=O)n(CC(=O)NC(C)Cc2ccccc2)n1
b. C(COCC1CO1)OCC1CO1
c. Oc1cc(O)cc(Sc2cc(O)cc(O)c2)c1
d. CC(C)=CCCC(C)CC#N
Answer: d
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}