The molecule is a cyclic tetrapyrrole anion that is the conjuagte base of epoxypheophorbide a. Major microspecies at pH 7.3 (according to Marvin v. 6.2.0). It is a conjugate base of an epoxypheophorbide a. It is a conjugate acid of an epoxypheophorbide a(2-).
3-[(8Z,17S,18S,19Z)-23-ethenyl-6-ethyl-13-hydroxy-14-methoxycarbonyl-5,18,22,26-tetramethyl-2-oxa-10,24,25,27-tetrazaheptacyclo[19.2.1.14,7.19,12.116,19.01,3.011,15]heptacosa-4,6,8,11(15),12(26),13,16(25),19,21(24),22-decaen-17-yl]propanoate