Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any additional words.
Options:
a) O=NN1CN(N=O)CN(N=O)C1
b) O=C(O)c1cc2ccccc2oc1=O
c) CN(C)N=Nc1cccnc1
d) Nc1ccc(-c2ccccc2N)cc1
e) CC1=CC(C)(C)Nc2ccc(Cc3ccc4c(c3)C(C)=CC(C)(C)N4)cc21
Answer: b
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}