Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any additional words.
Options:
[a] COC1=C(OC)C(=O)C(CCCCCCCCCCO)=C(C)C1=O
[b] CN1C(=O)CC(=O)N(c2ccccc2)c2cc(Cl)ccc21
[c] Cc1cc(S(=O)(=O)O)c(N)cc1Cl
[d] Oc1cc(O)cc(O)c1
Answer: b
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}