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, d, or e without using any other words.
Options:
[a] CC(=O)OCCC1=CCC2CC1C2(C)C
[b] C=C[Si](C)(C)N[Si](C)(C)C=C
[c] c1ccc2c(c1)-c1cccc3cccc-2c13
[d] CCCCNC(=O)OCC(O)C1COc2ccccc2O1
[e] Cc1cccc(C)c1Nc1ncccc1C(=O)O
Answer: a
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}