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. COc1ccc(CO)cc1
b. O=C(O)C(Cc1cc(I)c(O)c(I)c1)c1ccccc1
c. CC=Cc1ccc(O)c(OC)c1
d. CCN(CCO)c1ccccc1
e. O=[N+]([O-])c1ccc(Oc2ccc(Cl)cc2Cl)cc1
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}