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 OCCOCCOCCN1CCN(C(c2ccccc2)c2ccc(Cl)cc2)CC1
b CC1COC(=O)O1
c N#CCc1ccc(Cl)cc1
d CNC(=O)NNc1cc(C(F)(F)F)cc(C(F)(F)F)c1
e O=[N+]([O-])c1ccc(Cl)cc1
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}