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 other words.
Options:
a. COC(=O)COc1ccc2ccccc2c1
b. CC(C)C(CCN(C)C)(C(N)=O)c1cccc2ccccc12
c. CCOc1ccc(NC(=O)CC(C)O)cc1
d. CCN(CC)C(=O)c1ccccc1OCCO
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}