Seven persons S, E, V, B, A, D, and U sit in a row facing north. Each has different work experience of 15 years, 7 years, 2 years, 23 years, 19 years,...

Seven persons S, E, V, B, A, D, and U sit in a row facing north. Each has different work experience of 15 years, 7 years, 2 years, 23 years, 19 years, 6 years, and 12 years (not necessarily in this order). The following conditions apply:

• Persons with vowel names have even years of experience and do not sit at either end or exactly in the middle of the row.
• There are three persons sitting between S and the person with 23 years of experience.
• Exactly one person sits between S and A.
• The number of persons to the right of A equals the number of persons to the left of the person whose experience is 2.5 times that of A.
• B neither has the highest experience nor sits adjacent to S.
• The person with the least experience sits second to the left of D.
• U does not have the least experience.
• Both neighbors of B have more experience than B.

Question: Who sits fourth to the left of the person having 7 years of experience?