Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any additional words.
Options:
a.) O=C(O)c1ccccc1OP(=O)(O)O
b.) CCOC(=O)C(SP(=O)(OC)OC)c1ccccc1
c.) Cc1ccc2ccccc2c1
d.) CCCCCCc1ccc(O)cc1O
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}