Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, or c without using any other words.
Options:
a. CCN(CC)c1nc(Cl)nc(N(CC)CC)n1
b. Fc1ccc(C(c2ccccc2)(c2ccccc2F)n2ccnc2)cc1
c. O=C(Cc1ccc2c(c1)OCc1ccccc1C2=O)OCC(O)CO
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}