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: CC1(NC(N)=O)CCCC1
b: OCC1CCc2cc(C3CCCCC3)ccc21
c: Cc1ccccc1NC(=N)Nc1ccccc1C
d: c1ccc(Nc2cccc3ccccc23)cc1
e: O=C1C(CCSc2ccccc2)C(=O)N(c2ccccc2)N1c1ccccc1
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}