CAS: 65-19-0 Molecular Formula: C21H27ClN2O3 Molecular Weight (g/mol): 390.91 InChI Key: PIPZGJSEDRMUAW-VJDCAHTMSA-N Synonym: 17-Hydroxyyohimban-16-carboxylic acid methyl ester hydrochloride IUPAC Name: hydrogen methyl (1S,15R,18S,19R,20S)-18-hydroxy-3,13-diazapentacyclo[11.8.0.0²,¹⁰.0⁴,⁹.0¹⁵,²⁰]henicosa-2(10),4,6,8-tetraene-19-carboxylate chloride SMILES: [H+].[Cl-].COC(=O)[C@H]1[C@@H](O)CC[C@H]2CN3CCC4=C(NC5=CC=CC=C45)[C@@H]3C[C@H]12