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 other words.
Options:
a ClC1=C(Cl)C2(Cl)C3C(Cl)CCC3C1(Cl)C2(Cl)Cl
b NC(=O)ON=C1CSCCS1
c CSN(C)C(=O)Oc1cccc2c1OC(C)(C)C2
d CCCCC(C)(C)O[Si](OC(C)(C)CCCC)(OC(C)(C)CCCC)OC(C)(C)CCCC
e O=NN(CC(F)(F)F)CC(F)(F)F
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}