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, or d without using any other words.
Options:
(a) O=[N+]([O-])c1cc2nc(C(F)(F)F)[nH]c2cc1[N+](=O)[O-]
(b) CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1
(c) NC(=O)NO
(d) O=S1(=O)CC=CC1
Answer: d
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}