PROBLEM TO BE SOLVED : To provide a naturally derived novel compound having ultraviolet absorption effect. SOLUTION : The present invention provides a compound represented by formula (I), or a pharmaceutically acceptable salt or prodrug thereof. [In formula (I) : Q1 is an oxygen atom or an amino acid residue and, in cases where Q1 is an amino acid residue, the amino acid residue is bonded to the ring via a nitrogen atom; and Q2 is an amino acid residue, where the amino acid residue is bonded to the ring via a nitrogen atom.] SELECTED DRAWING : None COPYRIGHT : (C)2019, JPO&INPIT