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] COc1ccc2c(c1)N(CC(C)CN(C)C)c1ccccc1S2
[b] CCCOCCN(C(=O)CCl)c1c(CC)cccc1CC
[c] C=CCSc1nnc(CSP(=S)(OCC)OCC)s1
[d] Nc1ccc([N+](=O)[O-])cc1Cl
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}