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 additional words.
Options:
[a] CCOP(=S)(OCC)SCn1nc(CC)ccc1=O
[b] CCP(=O)(OC)Oc1ccc([N+](=O)[O-])cc1
[c] CCOP(=S)(OCC)SCSCc1ccccc1
[d] O=CC=Cc1ccccc1
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}