Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any additional words.
Options:
a: CCOC(=O)c1cnc2cc(OCC3CC3)c(OCC3CC3)cc2c1O
b: OCC1CCc2cc(C3CCCCC3)ccc21
c: CC1NC(=S)NC1=O
d: N#Cc1sc2c(=O)c3ccccc3c(=O)c=2sc1C#N
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}