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 additional words.
Options:
a.) O=C1NC(=O)C(=O)C(=O)N1
b.) CCCCCCCCCC(=O)OCCOCCOCCOC(=O)CCCCCCCCC
c.) CCOP(=S)(OCC)Oc1cccc(F)n1
d.) COc1ccc(S(=O)(=O)NC(=O)NC2CCCCC2)cc1OC
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}