Try searching for...
SCFBio, IIT Delhi
Formula: C20H23N2O3+ | Mol. Weight: 339.40 g/mol
IUPAC: methyl (1S,10S,11S,12Z,17S)-12-ethylidene-2-oxo-9-aza-14-azoniapentacyclo[9.5.2.01,9.03,8.014,17]octadeca-3,5,7-triene-10-carboxylate
CC=C1C[NH+]2CCC34C2CC1C(N3C5=CC=CC=C5C4=O)C(=O)OC