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 other words.
Options:
a: COc1ccc2c(c1)C13CCCCC1C(C2)N(C)CC3
b: CNC(=O)Oc1ccccc1Cl
c: CN(C)CCCN1c2ccccc2Sc2ccc(C(F)(F)F)cc21
d: FC(F)(F)c1ccc(Cl)c(Cl)c1
e: CCc1ccc(=O)n(CSP(=S)(OC)OC)n1
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}