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, or d without using any additional words.
Options:
(a) O=[N+]([O-])c1cccc(C(F)(F)F)c1
(b) COc1ccc(N=NN(C)C)cc1
(c) C=CCn1c(=O)n(CC=C)c(=O)n(CC=C)c1=O
(d) CCCCOC(=O)c1ccccc1O
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}