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] CC(=O)OC(C)CC(C)(C)OC(C)=O
[b] C#CC(C)(C)N
[c] CCOP(=O)(CC)Oc1cc(C)nc(SCC)n1
[d] COP(=O)(OC)OC(Br)C(Cl)(Cl)Br
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}