label: prostaglandin B1 + UDP-alpha-D-glucuronate => 15-O-(beta-D-glucuronosyl)-prostaglandin B1 + UDP + H(+)
label_lc: prostaglandin b1 + udp-alpha-d-glucuronate => 15-o-(beta-d-glucuronosyl)-prostaglandin b1 + udp + h(+)