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 or b without using any other words.
Options:
a CCOC(=O)c1c(C)cc2nc(COC(=O)NC)n(-c3ccccc3Cl)c(=O)c2c1C
b CN1Cc2ccccc2C(=O)c2cc(CC(=O)O)ccc21
Answer: a
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}