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: O=S1(=O)CCC(NC(=S)S)C1
b: OCC(F)(F)F
c: CCC1(c2ccccc2)CCC(=O)NC1=O
d: O=C1CCCCC1Cc1ccc2c(c1)OCO2
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}