(4~{R})-4-[(1~{R},2~{S},5~{R},6~{R},13~{S},14~{S},17~{R},19~{R})-6,14-dimethyl-17-oxidanyl-7,8,9,10-tetrazapentacyclo[11.8.0.0^{2,6}.0^{7,11}.0^{14,19}]henicosa-8,10-dien-5-yl]pentanoic acid

P42330 — Aldo-keto reductase family 1 member C3