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, or c without using any other words.
Options:
a C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1
b CCC(C)OCCO
c CN1C(C(=O)Nc2ccccn2)=C(OC(=O)C23CC4CC(CC(C4)C2)C3)c2sc(Cl)cc2S1(=O)=O
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}