Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any other words.
Options:
a: CCc1nccnc1C
b: CC(C)(c1ccc(O)cc1)c1ccc(O)cc1
c: O=C=NCCOC(=O)C1C2C=CC(C2)C1C(=O)OCCN=C=O
d: O=C(COc1ccc(Cc2ccc(Cl)cc2)cc1)OCc1cccnc1
e: CCOc1ccc2c3c1OC1C(O)C=CC4C(C2)N(C)CCC341
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}