Answer:
Aromatic
Step-by-step explanation:
Estradiol is an aromatic compound because it is composed on one benzene ring and three cyclohexane ring used to each other. The benzene ring is aromatic. Benzene has 6 pi electrons and a cyclic planar structure. The number of pi electrons in benzene equals 4n +2.
Huckel's rule: 4n + 2, where n is a positive integer.