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, d, or e without using any additional words.
Options:
a: Cc1cccc(N)c1C
b: CCOP(=S)(OCC)SCc1ccc([N+](=O)[O-])cc1
c: CC(C)c1ccc(CO)cc1
d: CCOP(=S)(Oc1cnn(C)c(=O)c1OC)OC(C)C
e: CCOP(=S)(CC)Oc1ccc(Cl)cc1
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}