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, c, d, or e without using any other words.
Options:
a: Nc1n[nH]c2ccc(C(F)(F)F)cc12
b: Nc1ccc([N+](=O)[O-])cc1Cl
c: CC(O)c1ccccc1
d: O=[N+]([O-])c1ccc(Cl)cc1
e: CC=Cc1ccc(OCc2ccccc2)c(OC)c1
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}