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, or d without using any additional words.
Options:
a) O=[N+]([O-])c1ccccc1O
b) CCCN(CCC)c1c([N+](=O)[O-])cc(C)cc1[N+](=O)[O-]
c) Clc1ccc(C(Cl)(Cl)Cl)cc1
d) CC(=O)OCC(C(OC(C)=O)c1ccccc1)[N+](=O)[O-]
Answer: d
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}