"complex composition of" is correct and usable in written English.
It is used to describe a mixture of complex elements which make up something. For example, "The complex composition of the painting made it difficult to analyze its meaning."
The work is almost as densely allegorical as a Hieronymus Bosch painting, with a complex composition of scale variations, orientation changes and many symbols of mankind and suffering.
The decellularized material retained the complex composition of peptides and glycosaminoglycans found in native adipose ECM.
This way, Klimenko transformed the complex composition of the natural gas from disadvantage into advantage.
An ecosystem is a complex composition of physical, chemical and biological components.
Because of complex composition of lunar regolith, however, the mechanisms of these reactions are not well understood.
However, the complex composition of bio-oils hinders their complete qualitative and quantitative analysis, and conventional chromatographic techniques lack the necessary separation power.
The complex composition of the polymers that constitute the cell wall requires a mixture of enzymes to hydrolyze the different glycosidic bonds present in biomass.
Introduction of secondary modifications and maturation are the reasons for the complex composition of mature peptidoglycan often manifesting in a species-specific fine structure.
However, given the rich and complex composition of suppressive factors, the microbes involved in disease suppression have been difficult to identify.
During the following period of the Italian Baroque, fountains became complex compositions of basins, sculpture, and water display.
Mehretu, forty-four, rose to fame, and a MacArthur Fellowship, in the past decade with exhaustingly complex compositions of overlaid marks and diagrams, which seemed bent on mirroring our cybernetic age in total.
