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. CN(C)CCCn1c(=O)n(-c2ccccc2)c2cc(Cl)ccc21
b. COc1ccc(CC(=S)N(C)C)cc1
c. O=C(O)c1ccc2cc(O)ccc2c1
d. CC(C)OP(=O)(OC(C)C)SCc1ccccc1
e. CN1CCC23CCCCC2C1Cc1ccc(O)cc13
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}