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 other words.
Options:
a Cc1ccccc1C(=O)Nc1ccccc1
b CCOC(=O)c1ncn2c1CN(C)C(=O)c1cc(F)ccc1-2
c C1CCC(N2CCOCC2)CC1
d CSc1nc(N=[N+]=[N-])nc(NC(C)C)n1
Answer: a
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}