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.) FC(F)(F)C(Cl)(Cl)C(Cl)(Cl)C(F)(F)F
b.) COCC1CS1
c.) O=C(O)c1ccccc1C(=O)Nc1cccc2ccccc12
d.) CCCCCCCCOP(=O)(O)OCCC(Cl)Cl
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}