Antioxidants 6 Aqueous solvent effect 6 Density functional theory 6 Molecular polarizability 6 PCM model Atoms in molecules 4 Natural bond orbital analysis 4 article 4 chemical structure 4 priority journal 4 (3-[2-aminoethyl]indole) 2 (4α→6″, 2α→O→1″)- phenylflavans 2 3 [2 aminoethyl]indole 2 Atoms in Molecules 2 Humans 2 Hydrogen Bonding 2 Melatonin 2 Models, Molecular 2 Molecular Conformation 2 Molecular dipole moment 2 Monte Carlo method 2 Natural bond prbital analysis 2 Neurotransmitter Agents 2 Serotonin 2 Solutions 2 Solvents 2 Static Electricity 2 TRA 2 Thermodynamics 2 Tryptamine 2