Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any other words.
Options:
[a] Cc1ccc2ccccc2n1
[b] O=C(CCCN1CCN2Cc3[nH]c4ccccc4c3CC2C1)c1ccc(F)cc1
[c] C=C(C)c1ccccc1
[d] Oc1cccc(Oc2ccccc2)c1
[e] O=[N+]([O-])c1cccc([N+](=O)[O-])c1
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}