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] Oc1c(Cl)c(Cl)cc(Cl)c1Cc1c(Cl)cc(Cl)c(Cl)c1O
[b] Oc1ccc(Cl)cc1Cc1cc(Cl)ccc1O
[c] CC(C(=O)O)c1ccc2oc(-c3ccc(F)cc3)nc2c1
[d] CC(Cc1ccccc1)NCCC(c1ccccc1)c1ccccc1
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}