Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any other words.
Options:
[a] CC(C#N)N1CCOCC1
[b] COC(=O)CS
[c] COC(=O)C(C)N(C(=O)Cc1ccccc1)c1c(C)cccc1C
[d] COc1ccc(CC2NCC(O)C2OC(C)=O)cc1
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}