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=[N+]([O-])c1ccc(-c2ccccc2)cc1
b: C=CC(=O)OCCOCCOCCOCCOC(=O)C=C
c: COc1cc2c(c3oc(=O)c4c(c13)CCC4=O)C1C=COC1O2
d: CCCCO[Si](OCCCC)(OCCCC)N(C)C1CCCCC1
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}