Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, or c without using any other words.
Options:
a O=C(C=Cc1ccccc1)OCc1ccccc1
b Cc1cccc(C)c1NC(=O)c1cc(S(N)(=O)=O)c(Cl)cc1O
c O=[N+]([O-])c1cc(C2CCCCC2)c(O)c([N+](=O)[O-])c1
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}