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 additional words.
Options:
a: OC1CCCc2ccccc21
b: O=C(Nc1ccc(Cl)c(Cl)c1)c1cc(Cl)cc(Cl)c1O
c: c1nc(NC2CC2)c2ncn(C3CC3)c2n1
d: CCC(C(c1ccc(Cl)cc1)c1ccc(Cl)cc1)[N+](=O)[O-]
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}