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 additional words.
Options:
a: CCCc1ccccc1
b: COc1ccc2cc(C(C)C(=O)O)ccc2c1
c: CNC(=O)Oc1cc(C)cc(C(C)C)c1
d: CCCOc1ccc(C(O)=S)c(CC)c1OC
e: CCCOC(=O)Cc1ccc(OCC(=O)N(CC)CC)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}