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, or c without using any additional words.
Options:
a. CCOP(=O)(OCC)OC(C)=CC(=O)OC(C)c1ccccc1
b. CCN(CC)CCCC(C)Nc1ccnc2cc(Cl)ccc12
c. CCOP(=S)(OC)Oc1cnn(C)c(=O)c1OC
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}