Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any other words.
Options:
a: CCOC(=O)CCC=O
b: FC(F)(F)c1nc2c(Br)c(Cl)c(Cl)cc2[nH]1
c: CN(N=O)c1ccccn1
d: NC1=C(Cl)C(=O)c2ccccc2C1=O
e: CCOCCC(=O)OCC
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}