Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any other words.
Options:
a. Nc1ccc(F)c(F)c1F
b. O=[N+]([O-])c1ccc(Oc2c(F)cc(Cl)cc2Cl)cc1
c. CCP(=O)(OC)Oc1ccc(Cl)cc1
d. COc1c(O)cc(Cl)c(Cl)c1Cl
e. COc1cc(C=O)ccc1O
Answer: a
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}