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, d, or e without using any additional words.
Options:
a CN1C2CCC1CC(OC(=O)C(CO)c1ccccc1)C2
b O=NN1CN2CN(C1)CN(N=O)C2
c Cc1ccccc1C(=O)Nc1ccccc1
d CCOC(=O)C(C)(CC)Oc1ccc(Cc2ccc(Cl)cc2)cc1
e CCCCCCCCOC(CBr)c1ccc(C2CCCCC2)cc1
Answer: e
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}