<｜begin▁of▁sentence｜>### Instruction:
As a Regulatory Affairs Manager, you need to assess the compliance of a network of pharmaceutical manufacturing sites to ensure they meet regulatory standards. To determine the largest cohesive unit in the network, use the clique_number function provided by NetworkX to identify the size of the largest clique within the network. This information will help in evaluating the interconnectedness of the sites and their overall compliance with regulations.
### Response:
from igraph import Graph

# Create a graph with some edges
edges = [(0, 1), (1, 2), (0, 2), (3, 4), (4, 5), (3, 5)]
g = Graph(edges=edges, directed=False)

# Find the clique number (size of the largest clique)
clique_num = g.clique_number()

print('The clique number of the graph is:', clique_num)
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