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: Clc1sc(Cl)c(Cl)c1Cl
b: O=C1C(CCSc2ccccc2)C(=O)N(c2ccccc2)N1c1ccccc1
c: Nc1ccc(C(=O)Nc2ccccc2N)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}