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: N#Cc1c(Cl)cccc1Cl
b: CC(=O)c1ccc(N)cc1
c: CCOC(C1=NCC(C)(C)CN1)c1cccc(Cl)c1
d: O=C(Cl)c1cccc(Cl)c1Cl
e: CCOP(=S)(CC)Oc1ccc([N+](=O)[O-])c(C)c1
Answer: a
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}