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)C(=O)N(C)N=O
b: COC(=O)C(C)N(C(=O)Cc1ccccc1)c1c(C)cccc1C
c: CCN(CC)C(=O)C(Cl)=C(C)OP(=O)(OC)OC
d: CCCC(=O)c1ccc2c(c1)N(CCCN1CCN(C)CC1)c1ccccc1S2
e: COP(=O)(Oc1cc(Cl)c(Br)cc1Cl)c1ccccc1
Answer: e
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}