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, or d without using any additional words.
Options:
a: CCc1ccc(C(c2ccc(CC)cc2)C(Cl)Cl)cc1
b: Cc1c(CC(=O)O)c2ccccc2n1C(=O)c1ccccc1
c: CCNc1nc(Cl)nc(NC(C)C)n1
d: CN(C)CCOc1ccccc1Cc1ccccc1
Answer: d
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}