brown ht molecule, e155, molecular structure, 3d model van der waals

brown ht chocolate food diazo dye molecule molecular structure chemical formula isolated model c27h18n4na2o9s2 atom e155 colorings organic sodium salts naphthalenesulfonates resorcinols primary alcohols enumber additives chemistry compound atomic acid coloring composition bond health carbon pharmaceutical science skeletal pigment additive biology medical medicine hydrogen color oxygen natural