Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any other words.
Options:
a CCOC1CCCCC1O
b CCCCOCCOCCOC(OCCOCCOCCCC)c1ccc2c(c1)OCO2
c O=CC(Cl)CCl
d O=C1C=Cc2cc(Br)ccc2C1=O
e CCON(CC)N=O
Answer: c
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}