The molecule is an organic cation obtained by protonation of the tertiary amino group of irinotecan. It is an ammonium ion derivative and an organic cation. It is a conjugate acid of an irinotecan.
[(19S)-10,19-diethyl-19-hydroxy-14,18-dioxo-17-oxa-3,13-diazapentacyclo[11.8.0.02,11.04,9.015,20]henicosa-1(21),2,4(9),5,7,10,15(20)-heptaen-7-yl] 4-piperidin-1-ium-1-ylpiperidine-1-carboxylate