Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any additional words.
Options:
[a] CCCC(=O)OCCc1ccccc1
[b] CC(C)NCC(O)COc1ccc(CC(N)=O)cc1
[c] CC(C)(C)C(O)(CCc1ccc(Cl)cc1)Cn1cncn1
[d] Cc1cccc(N)c1C
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}