Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any other words.
Options:
a CCOP(=S)(CC)Sc1ccc(Cl)cc1
b O=c1[nH]c2c(Cl)c(Cl)cc(Cl)c2o1
c CC(C)=CC1CC(C)CCO1
d CCOP(=S)(OCC)Oc1cc(Cl)c(SC)cc1Cl
e Clc1ccccc1
Answer: d
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}