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 additional words.
Options:
a: CCCSc1cc(Oc2ccc([N+](=O)[O-])cc2)ccc1Cl
b: CC(C)OC(=O)COc1ccc(Cl)cc1Cl
c: O=[N+]([O-])c1ccc(O)c2ncccc12
d: Oc1ccc(Cl)c(O)c1
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}