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.) Cc1nccn1Cc1ccccc1
b.) CCCCCCCCCCCCCO
c.) CC(C)(OOC(C)(C)c1ccccc1)c1ccccc1
d.) CC12CCC3C4CCC(=O)C=C4CCC3C1CCC2OC(=O)N(CCCl)N=O
Answer: b
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}