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, d, or e without using any additional words.
Options:
a. CC1CCCOC1=O
b. C1=CCC(C2CC3C=CC2C3)CC1
c. CCON=C(CC)C1=C(O)CC(c2c(C)cc(C)cc2C)CC1=O
d. N#CN=c1ccccn1Cc1ccccc1Cl
e. CCc1nn(-c2ccc(F)cc2)c2c(=O)[nH]ccc12
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}