Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any additional words.
Options:
a.) CNC(=O)ON=C1SC(C)OC1C
b.) CC1CCC2C(C)C(=O)OC3OC4(C)CCC1C32OO4
c.) CC(=O)C=CC(C)C
d.) OC1CC2CC1C1CC3OC3C21
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}