2-[bis(2-chloroethyl)amino]-1-[2-[2-[1-[(3-ethyl-9,10-dimethoxy-2,3,4,6,7,11b-hexahydro-1h-benzo[a]quinolizin-2-yl)methyl]-6,7-dimethoxy-3,4-dihydro-1h-isoquinoline-2-carbonyl]pyrrolidine-1-carbonyl]pyrrolidin-1-yl]ethanone;hydrochloride