Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any other words.
Options:
a) CCCCN1C(=O)C2CC=CCC2C1=O
b) OC(c1ccc(Cl)cc1)(c1cncnc1)c1ccccc1Cl
c) Cc1cc(=NC(=O)c2ccccc2O)n(C)n1C
d) c1ccc(Cc2ccccc2)cc1
e) COC(=O)C1CCc2cc(C3CCCCC3)ccc21
Answer: e
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}