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: CN(C)C(=S)NN=Cc1ccc([N+](=O)[O-])o1
b: O=C(CF)OCCOC(=O)CF
c: O=C(O)c1cccc(Cl)n1
d: COCCC(C)OC
e: Oc1ccc(C(c2ccc(O)cc2)c2ccccn2)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}