3,7,8-trihydroxy-3-methyl-10-oxo-1,4-dihydropyrano[4,3-b]chromene-9-carboxylic acid

Fulvic acid is a naturally occurring organic compound produced by microbial activity, commonly used in agriculture as a soil amendment and plant growth stimulant. It is characterized by a complex aromatic and heterocyclic structure with multiple oxygen-containing functional groups.