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 other words.
Options:
a. Cn1cnc2c1c(=O)[nH]c(=O)n2C
b. O=C1OC(C(O)CO)C(O)=C1O
c. Cc1cc(C)n(CCO)c(=O)n1
d. C1CCC(N2CCOCC2)CC1
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}