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, c, or d without using any other words.
Options:
[a] CC(C)(C)OCC1CO1
[b] COC(=O)CCC(Br)C(C)=O
[c] CCOP(=S)(OCC)ON1C(=O)c2cccc3cccc(c23)C1=O
[d] O=C(O)c1cc2ccccc2oc1=O
Answer: b
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}