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, or c without using any other words.
Options:
a: CCCCCCOCCOC(=O)CCC(=O)OCCOCCCCCC
b: C=CC(=O)OCCC(C)OC(=O)C=C
c: OC1C2C3OC3C1C1C2C2(Cl)C(Cl)=C(Cl)C1(Cl)C2(Cl)Cl
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}