Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any additional words.
Options:
a CNC(=O)CSP(=O)(OC)SC
b CC(C)C(Br)C(=O)OC(C)C(Cl)(Cl)Cl
c NCCCOCCOCCOCCCN
d FC1(F)CC(C2CC3(Cl)C(Cl)=C(Cl)C2(Cl)C3(Cl)Cl)C1(F)F
e O=C(OCCOc1ccc(Cl)cc1Cl)c1ccccc1
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}