Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (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 O=C1CCOc2ccccc21
b CC(C(=O)O)c1ccc2c(c1)OCc1ccccc1C2=O
c CCOC(=O)c1c(C)cc2nc(COC(=O)NC)n(-c3ccccc3Cl)c(=O)c2c1C
d COP(=S)(OC)SCc1nc(N)nc(N)n1
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}