Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any other words.
Options:
a.) CCOC(C1=NCCCN1)c1cccc(F)c1
b.) CCCSP(=O)(OCC)Oc1c(Cl)cc(Cl)cc1Cl
c.) CCOP(=O)(OCC)OC(=C(Cl)Cl)c1cc(Cl)cc(Cl)c1
d.) Cc1ccccc1NCCO
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}