Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are not sure, you must pick either a, b, or c without using any additional words.
Options:
a: Cc1ccccc1-n1c(C)nc2ccccc2c1=O
b: CCNc1nc(NC(C)CC)nc(OC)n1
c: CCOC(=O)c1c(C)cc2nc(COC(=O)NC)n(-c3ccccc3Cl)c(=O)c2c1C
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}