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, c, d, or e without using any additional words.
Options:
a: CCCCN1CCCC1=Nc1ccc(Cl)c(Cl)c1
b: C=CN(CC)C(C)=O
c: NS(=O)(=O)OCC(Cl)(Cl)Cl
d: OCC1OC(N2CCN(C3OC(CO)C(O)C(O)C3O)CC2)C(O)C(O)C1O
e: NC(=S)NC(N)=S
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}