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 additional words.
Options:
a: CCCC(C)(COC(N)=O)COC(=O)NC(C)C
b: CN(C)c1nc2cc(Cl)ccc2o1
c: FC(F)(F)c1nc2c(Cl)c(Cl)c(Cl)cc2[nH]1
Answer: c
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}