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 O=Cc1ccc(O)cc1
b O=P(Oc1ccccc1)(Oc1ccccc1)OC1CCCCC1
c FC(F)(F)c1nnc2c3ccccc3ccn12
d CCC(C)(C)c1ccc(Cl)c(OC(=O)NC)c1
e CC(C)(C)c1cc([N+](=O)[O-])cc([N+](=O)[O-])c1O
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}