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, d, or e without using any other words.
Options:
a O=C1NCCN1c1ncc([N+](=O)[O-])s1
b COP(=S)(OC)SCSCC=C(Cl)Cl
c CSP(SC)SC
d CN1CCOC1=O
e CC(Oc1ccc(Oc2nc3ccc(Cl)cc3o2)cc1)C(=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}