label: 13,17-bis(1-carboxyethyl)-3-(1,3-dioxan-2-yl)methylidene-8-ethenyl-2-hydroxy-2,7,12,18-tetramethylchlorin dimethyl ester
label_lc: 13,17-bis(1-carboxyethyl)-3-(1,3-dioxan-2-yl)methylidene-8-ethenyl-2-hydroxy-2,7,12,18-tetramethylchlorin dimethyl ester