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.) O=c1[nH]c(=O)n(C2CCCO2)cc1F
b.) [O-][n+]1onc2c1c1no[n+]([O-])c1c1no[n+]([O-])c21
c.) COc1ccc2c(c1)N(CCCN(C)C)c1ccccc1S2
d.) CC(C)COc1ccc2ccccc2c1
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}