Cyclopenta[7,8]phenanthro[3,2-c]quinolizine,1,2,3,3a,3b,4,5,5a,6,13,14,14a,14b,15,16,16a-hexadecahydro-14a,16a-dimethyl-,[3aS-(3aa,3bb,14ab,14ba,16ab)]-