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] CCOc1ccc(-n2c(C)nc3ccccc3c2=O)cc1
[b] Cc1ccc(N=CN(C)Sc2ccc(Cl)cc2)c(C)c1
[c] CCc1ncc(C)nc1C
[d] C[Si]1(C)N[Si](C)(C)N[Si](C)(C)N[Si](C)(C)N1
Answer: d
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}