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, d, or e without using any other words.
Options:
a: O=S(=O)(c1ccc(O)cc1)c1ccc(O)cc1
b: S=c1sc2nc3ccccc3nc2s1
c: CC1CC(C)(O)CC(C(O)CC2CC(=O)NC(=O)C2)C1=O
d: CC(C)Oc1cccc(C2CC(=O)NC2=O)c1
e: COCC1CS1
Answer: a
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}