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, or c without using any other words.
Options:
a: c1ccc(Nc2cccc3ccccc23)cc1
b: CCc1cc2c(cc1C=O)C(C)(C)CCC2(C)C
c: C=C1CC(=CC)C(=O)OC2CCN3CC=C(COC(=O)C1(C)O)C23
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}