Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are uncertain, you must pick either a, b, or c without using any other words.
Options:
(a) c1ccc(N=Nc2ccccc2)cc1
(b) C=CC1CN2CCC1CC2C(O)c1ccnc2ccc(OC)cc12
(c) O=C(NCCO[N+](=O)[O-])c1cccnc1
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}