Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any additional words.
Options:
a CCC(C)(O)C(=O)OC1C(=O)OC2CC3C(C)=CC(O)C(O)C3(C)C3C4(O)OCC23C1C(C)C4O
b CC(C)NP(O)(=S)Oc1cc(Cl)c(Cl)cc1Cl
c Nc1ccccc1C(=O)O
d O=[N+]([O-])c1ccc(Cl)cc1
Answer: b
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}