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, d, or e without using any additional words.
Options:
a: Nc1ccc(Nc2ccccc2)cc1
b: COC(COC(N)=O)C1=C(N2CC2)C(=O)C(C)=C(N2CC2)C1=O
c: COc1cc(C(=O)Oc2c(CCC(C)=O)c(=O)n(-c3ccccc3)n2-c2ccccc2)cc(OC)c1OC
d: C=C[Si](OC)(OC)OC
e: N#CCN1CCOCC1
Answer: d
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}