The phrase "the complex consists of" is correct and can be used in written English.
You can use it when you are describing a complex (a large, organized system) and the individual components or elements that build it up. For example: "The complex consists of four apartment buildings, a recreation center, and a community garden."
The complex consists of large sheds interspersed with functional courts and alleys, as in a Hollywood film lot, punctuated with sets of extreme specificity.
The complex consists of three 1970s tower blocks flanked by a leafy tropical garden at the front, and an open-air pool at the back.
The complex consists of a magnificent ziggurat (the largest structure of its kind in Iran), temples, and three palaces.
Commonly called Prambanan Temple, the complex consists of six main temples; the three large ones along the west, dedicated to Shiva, Vishnu, and Brahma, contain fine statues.
Discovered in 1957, the complex consists of some 700 shelters and is one of the largest repositories of prehistoric art in India.
The complex consists of Court Plaza North, a six-story building filled primarily with lawyers as well as the district office of Representative Steven Rothman and the headquarters of the Sanzari company itself.
The extant structures in the complex consist of a chapel crowned with a ribbed blue-tiled dome, enclosed by a wall, and fronted by an archway.
In 1555, the complex consisted of four churches, including and one cave church.
By AD 800, the complex consisted of about 50 buildings arranged around 7 major courtyards.
Housing at the complex consisted of 44 barn-style buildings, subdivided into 771 individual stables and separated by walkways.
The core subunits of the complex consist of a total of 14 helical transmembrane segments; in yeast, the supernumerary subunits contribute five additional transmembrane helices.
