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, or d without using any additional words.
Options:
a CN(C)C(=O)NC1CC2CC1C1CCCC21
b CC(C)C(=O)N(C)C(=O)Oc1cccc(C(C)C)c1
c CCCC(=O)Oc1ccc(OC)cc1
d CCCCCCc1ccccc1O
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}