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 CN(N=O)C(=N)N[N+](=O)[O-]
b C1CSCCO1
c CN1CCC23c4c5ccc(O)c4OC2C(N=[N+]=[N-])CCC3(O)C1C5
d O=C1c2ccccc2C(=O)C1c1c(Cl)cccc1Cl
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}