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.) CO[Si](CCCNCCC[Si](OC)(OC)OC)(OC)OC
b.) Cc1ccc(Nc2ccc(Nc3ccc(C)cc3)c3c2C(=O)c2ccccc2C3=O)cc1
c.) C=CC(=O)OCC(CC)(COC(=O)C=C)COC(=O)C=C
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}