Showing structure for (1r,11s,12e,17s)-14-(chloromethyl)-12-ethylidene-10-(oxidomethylidene)-8,14-diazapentacyclo[9.5.2.0¹,⁹.0²,⁷.0¹⁴,¹⁷]octadeca-2,4,6,8-tetraen-14-ium