Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any additional words.
Options:
(a) c1ccc(N(CC2CO2)CC2CO2)cc1
(b) C#CC1(OC(N)=O)CCCCC1
(c) CC(Cc1ccccc1)NCCn1cnc2c1c(=O)n(C)c(=O)n2C
(d) COc1cc2[nH]c(C)c(CCN3CCN(c4ccccc4)CC3)c2cc1OC
(e) O=[N+]([O-])C(Br)(CO)CO
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}