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, or d without using any other words.
Options:
a. Nc1n[nH]c2ccc(C(F)(F)F)cc12
b. NC(Cc1ccc(N(CCCl)CCCl)cc1)C(=O)O
c. O=C(O)Cc1ccccc1Oc1ccc(Cl)cc1Cl
d. CCCCCCCCOP(OCC(CC)CCCC)Oc1ccccc1
Answer: c
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}