Task: Please answer the multiple choice question.
Question: Rank these molecules from lowest to highest LD50 in rats (oral exposure).
Constraint: You must select all options from a, b, c, or d without using any other words.
Options:
a) COP(=O)(OC)Oc1ccc(S(C)(=O)=O)c(C)c1
b) CCNC(=O)C(C)OC(=O)Nc1ccccc1
c) O=C(Cl)c1ccc(C(=O)Cl)cc1
d) COP(=S)(OC)Oc1ccc([N+](=O)[O-])cc1Cl
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}