Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any additional words.
Options:
a. CCOP(=O)(OCC)Oc1ccc(Cl)cc1Cl
b. COCc1ccccc1
c. CON(C)C(=O)Nc1ccc(Br)c(Cl)c1
d. CCCCOCC(O)COc1ccccc1
e. CCCCC(CC)COC(CBr)c1cccc(Cl)c1
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}