Standard InChI: InChI=1S/C34H41N5O5/c1-38(2)34(44)29(22-24-12-7-4-8-13-24)37-31(41)28(21-23-10-5-3-6-11-23)36-32(42)30-14-9-19-39(30)33(43)27(35)20-25-15-17-26(40)18-16-25/h3-8,10-13,15-18,27-30,40H,9,14,19-22,35H2,1-2H3,(H,36,42)(H,37,41)/t27-,28-,29-,30-/m0/s1
1.Wang CL, Yao JL, Yu Y, Shao X, Cui Y, Liu HM, Lai LH, Wang R.. (2008) Structure-activity study of endomorphin-2 analogs with C-terminal modifications by NMR spectroscopy and molecular modeling., 16 (12):[PMID:18490168][10.1016/j.bmc.2008.05.001]