Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any additional words.
Options:
(a) C[Si]1(C)OCCN(CCO)CCO1
(b) C=C1C(=CC=C2CCCC3(C)C2CCC3C(C)CCC(O)C(C)C)CC(O)CC1O
(c) COC(=O)Nc1cccc(OC(=O)Nc2cccc(C)c2)c1
(d) C[Si](C)(C)CCCC(=O)O
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}