The phrase "a complex that has" is correct and usable in written English.
It can be used when describing a complex system, structure, or idea that possesses certain characteristics or features.
Example: "The research focused on a complex that has multiple interconnected components, each influencing the overall function."
Alternatives: "a system that possesses" or "an entity that contains".
They've found a complex that has a pool and a beach, and are just waiting for the right apartment to come on the market.
"That area went from plans on a piece of paper to a complex that has 14 million square feet in less than four years.
Designed by Lamb & Rich Architects, Main Building is part of a complex that has been designated a New York City landmark as well as a national treasure.
The two executives met on Friday afternoon in the French finance ministry, a complex that has its own boat terminal on the Seine so that the minister can attend parliamentary sessions.
If you like world music and spicy food, you'll find it at "Fiesta," a complex that has been set up in the Ippodromo delle Capannelle and which will stay open until Aug. 25.
We're still in the city, but we've moved to a complex that has a courtyard, so Jasper and Jezebel are free to roam for about an hour a day — while I try my best to keep track of them.
She lived in a flat in a complex that had been built for Dublin's poor by one of the 1916 revolutionaries.
Two mortar rounds landed near a complex that had been used as Saddam Hussein's central security directorate in eastern Baghdad, near an American base, but there were no immediate reports of casualties.
I was headed to the Oberoi Hotel, a beautiful complex that has a restaurant known for its sweeping views of the city.
We focus on the vertebrate head skeleton, using a genetic approach in the threespine stickleback fish, a species complex that has repeatedly evolved head skeletal adaptations.
Almost everyone here is from Alemão, a favela complex that has started to move upmarket since it was "pacified" by police in 2010.
