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 other words.
Options:
a: CC(Oc1ccc(Cl)cc1Cl)C(=O)O
b: O=C1c2ccccc2-c2c([N+](=O)[O-])cc3c4cc([N+](=O)[O-])c5c6c(ccc(c7ccc1c2c73)c64)C(=O)c1ccccc1-5
c: O=C1OCC(CCl)O1
d: O=c1[nH]cnc2c1ncn2C1OC(COP(=O)(O)O)C(O)C1O
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}