Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any additional words.
Options:
a NNC(=O)OC1CC2CCC(C1)N2C(=O)Oc1ccccc1
b CCCCC(CC)COCC(CC)CCCC
c C[n+]1cc2c3c(ccc2c2ccc4cc5c(cc4c21)OCO5)OCO3
d ClCBr
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}