Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any additional words.
Options:
a: O=C(O)c1ccc(Cl)cc1
b: COc1ccc(Oc2ccc(NC(=O)N(C)C)cc2)cc1
c: CCCCCCCCCCCCOC(=O)c1cc(O)c(O)c(O)c1
d: CCCOc1c(Cl)c(Cl)c(Cl)c(Cl)c1Cl
e: CN(Cc1ccc(Cl)cc1Cl)S(N)(=O)=O
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}