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) OCCC1CCCCC1
b) NC(N)=O
c) COC(=O)CC(SP(=O)(OC)OC)C(=O)OC
d) C=C(C)C1CCC(C)(OP(=S)(OC)OC)CC1
e) O=[N+]([O-])c1cc(Cl)cc2[nH]c(C(F)(F)F)nc12
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}