Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are not sure, you must pick either a, b, or c without using any other words.
Options:
a: CCCOc1ccc(C(O)=S)c(CC)c1OC
b: Nc1ncnc2c1ncn2C1OC2=CC(C(=O)O)(C(O)C(=O)O)OC2C1O
c: CC(C(=O)O)c1ccc(-n2cc3ccccc3n2)cc1
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}