Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are uncertain, you must pick either a, b, or c without using any additional words.
Options:
a. O=[N+]([O-])c1ccc(NS(=O)(=O)c2ccc(Cl)c(C(F)(F)F)c2)c(Cl)c1
b. Cc1ccc2nc3c4cccc5cccc(c(=O)n3c2c1)c54
c. CCC(C)(C)OO
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}