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: O=C(Cl)c1ccc(C(=O)Cl)cc1
b: CC(C)(O)Cc1ccccc1
c: CCOP(=O)(OCC)Oc1ccc(SC)c(C)c1
d: Oc1ccc2ccccc2c1Cl
e: CC(=O)OC(c1ccc(Cl)c(Cl)c1)C(Cl)(Cl)Cl
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}