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 O=[N+]([O-])OC1COC2C(O)COC12
b CC12CC=CCC1C(=O)OC2=O
c COP(=S)(OC)SCc1nc(N)nc(N)n1
d CC(C)(C)NCC(O)COc1cccc2c1CC(O)C(O)C2
Answer: d
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}