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) O=C1CCc2cc(C(O)CCCN3CCN(c4cccc(Cl)c4)CC3)ccc2N1
b) C=CC(=O)OCCCOCC
c) CC(=O)c1ccccn1
d) Clc1cccc(SCc2nnn[nH]2)c1
e) CC(=O)CC(c1ccc(Cl)cc1)c1c(O)c2ccccc2oc1=O
Answer: e
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}