Task: Please answer the multiple choice question.
Question: Rank these molecules from lowest to highest acute oral toxicity rat LD50.
Constraint: You must select all options from a, b, or c without using any additional words.
Options:
[a] CBr
[b] CCOC(=O)c1noc(C)c1C(C)=O
[c] CN1CCC23c4c5ccc(O)c4OC2C(N=[N+]=[N-])CCC3(O)C1C5
Answer: a
Task: Please answer the multiple choice question.
Question: Rank these molecules from lowest to highest {acute_toxicity__names__noun}.
Constraint: You must select all options from {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%acute_toxicity%}
Answer: {%multiple_choice_result}