Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any other words.
Options:
a: CCOC(=O)C(C)Oc1ccc(Oc2nc3ccc(Cl)cc3s2)cc1
b: COc1ccc2c(c1)c(CC(=O)OCC=C(C)CCC=C(C)CCC=C(C)C)c(C)n2C(=O)c1ccc(Cl)cc1
c: C(=Nc1ccccc1)Nc1ccccc1
d: O=C(Cc1ccc2c(c1)OCc1ccccc1C2=O)OCC(O)CO
Answer: d
Task: Please answer the multiple choice question.
Question: Which molecule has the highest {acute_toxicity__names__noun}?
Constraint: Even if you are {#uncertain|not sure!}, you must pick either {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%acute_toxicity%}
Answer: {%multiple_choice_result}