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, or d without using any other words.
Options:
a COc1cc2c(cc1OC)-c1c(OC)c(OC)cc3c1C(C2)N(C)CC3
b Cc1cc[nH]n1
c CCCCCCC(C)P(=O)(C(C)CCCCCC)C(C)CCCCCC
d CC1CCCCN1CCCOC(=O)c1ccc(Cl)c(Cl)c1
Answer: d
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}