IUPAC:2-[(4R,5S,7R,8S,13S,21S)-13,17,18,21-tetrahydroxy-7-(hydroxymethyl)-2,10,14-trioxo-5-(3,4,5-trihydroxybenzoyloxy)-3,6,9,15-tetraoxatetracyclo[10.7.1.1^{4,8}.0^{16,20}]henicosa-1(19),16(20),17-trien-11-yl]acetic acid
IUPAC:2-[(4R,5S,7R,8S,13S,21S)-13,17,18,21-tetrahydroxy-7-(hydroxymethyl)-2,10,14-trioxo-5-(3,4,5-trihydroxybenzoyloxy)-3,6,9,15-tetraoxatetracyclo[10.7.1.1^{4,8}.0^{16,20}]henicosa-1(19),16(20),17-trien-11-yl]acetic acid