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 additional words.
Options:
a: CCN(CC)CCN
b: CC(C)OP(=S)(OC(C)C)SCn1nc(-c2ccccc2)ccc1=O
c: CCN(CC)P1(=S)OCc2cc([N+](=O)[O-])ccc2O1
d: O=C1c2ccccc2C(=O)N1CC1CO1
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}