Task: Please answer the multiple choice question.
Question: Rank these molecules from lowest to highest acute oral toxicity (LD50 in rats).
Constraint: You must select all options from a, b, c, or d without using any other words.
Options:
a NC(=O)c1ccc([N+](=O)[O-])cc1
b OCCOCCOCCN1CCN(C(c2ccccc2)c2ccc(Cl)cc2)CC1
c Cc1ccc(O)c([N+](=O)[O-])c1
d Cc1ccc(N)cc1O
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}