@book{28396,
	author = {Wu, Z. F.},
	title = {Cytotoxic cassane diterpenoids from the seeds of Caesalpinia sappan.},
	url = {https://drive.google.com/file/d/1aV4mQF6cHvXnJLpA1nF4xYTukE4LyuN4/view?usp=drivesdk}
}