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 other words.
Options:
a: NS(=O)(=O)c1cc(Cl)c(Cl)c(S(N)(=O)=O)c1
b: CCCC(C)(C)C(=O)Nc1ccc(Cl)cc1
c: CC(C)(O)C(=O)c1ccc(OCCO)cc1
d: CCOC(C1=NCC(O)CN1)c1ccccc1
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}