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 additional words.
Options:
a: COc1c(OP(=S)(OCC(C)C)OC(C)C)cnn(C)c1=O
b: Cc1cccc(C)c1N(COCC(C)C)C(=O)CCl
c: Cc1cccc2[nH]nnc12
d: COc1ccc2cc(C(C)C(=O)OCC(O)CO)ccc2c1
Answer: c
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}