Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any other words.
Options:
a.) Nc1ccc(N=Nc2ccccc2)c(N)c1
b.) CCCOP(=O)(OCCC)Oc1ccc2c(C)c(Cl)c(=O)oc2c1
c.) COC(C)CCOC(C)=O
d.) CC(C)OS(=O)(=O)OC(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}