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) O=C(O)c1ccccc1C(=O)c1ccccc1
b) CCOP(=S)(Oc1ccc([N+](=O)[O-])cc1)c1ccccc1
c) CC1(CO)CN(c2ccccc2)NC1=O
d) COP(=S)(OC)SCn1ncccc1=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}