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 other words.
Options:
a. O=[N+]([O-])c1ccc(Cl)cc1
b. O=C(Cl)c1cccc([N+](=O)[O-])c1
c. COP(=O)(OC)OCc1ccccc1
d. CCCCc1ccc(C)cc1O
e. CNC(=O)Oc1cc(C(C)C)ccc1Cl
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}