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 other words.
Options:
a: O=C1OCCN1N=Cc1ccc([N+](=O)[O-])o1
b: c1coc(-c2nc3ccccc3[nH]2)c1
c: O=[N+]([O-])OCC(CO[N+](=O)[O-])O[N+](=O)[O-]
Answer: c
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}