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 CN(CCO)c1ccccc1
b CCC1NC(=O)C2C(Cl)C(Cl)CN2C(=O)C(CO)NC(=O)CC(c2ccccc2)NC(=O)C(CO)NC1=O
c COc1ccccc1C=Nc1ccccc1C(=O)O
Answer: c
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}