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 additional words.
Options:
a: N#CCc1ccccc1
b: O=Cc1cccc(Br)c1
c: CN1C(=O)CC(=O)N(c2ccccc2)c2cc(Cl)ccc21
d: CCCCOCCCOC(=O)CCOc1cc(Cl)c(Cl)cc1Cl
e: COc1ccc2cc(CCC(C)=O)ccc2c1
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}