Gallate decarboxylase is another enzyme in the degradation of gallic acid. Mango leaves also have significant polyphenol content, including xanthonoids, mangiferin and gallic acid. Salts and esters of gallic acid are termed "gallates". Results are typically expressed as gallic acid equivalents. The chemical formula of gallic acid is CH(OH)COOH. They possibly contained both Gallic and Germanic influences. He commanded 4,000 Numidian, 2,000 Iberian peninsular, 4,000 Gallic and 450 Libyan-Phoenician cavalry. These are all sieges of large Gallic "oppida". He mistakenly interpreted megaliths as Gallic tombs. The Romans sent out a detachment of some 380 Gallic, Mysian and Cretan light cavalry. The Romans respected and feared the Gallic tribes. It soon received Gallic and Ligurian reinforcements. Caesar's alliances with many Gallic clans broke. He defeated the Vandals, Visigoths, Palmyrene Empire, and finally the remainder of the Gallic Empire. Caesar and his Gallic allies defeated the Helvetii.