Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any additional words.
Options:
(a) C=C1CC(=O)N(c2cccc([N+](=O)[O-])c2)C1=O
(b) O=C1OC(OC2OC(=O)C(Cl)=C2Cl)C(Cl)=C1Cl
(c) CCC(C)(C)O
(d) CCOP(=O)(N=C1SCS1)OCC
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}