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) Cc1c(C(N)=O)cc([N+](=O)[O-])cc1[N+](=O)[O-]
b) C=Cc1ccc(OC(C)=O)cc1
c) Nc1ccc(S(N)(=O)=O)cc1
d) CCOP(=O)(CC)Sc1ccc(Cl)cc1
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}