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, or c without using any other words.
Options:
[a] CNCCCC1c2ccccc2C=Cc2ccccc21
[b] CCCCSSC(Cl)C(Cl)Cl
[c] CN(Sc1ccc([N+](=O)[O-])cc1)C(=O)Oc1cccc2c1OC(C)(C)C2
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}