Can you give the molecular formula of the molecule 18-ethyl-7-methoxy-10-(2-methyl-6-propan-2-ylphenyl)imino-2,12-diazapentacyclo[11.8.0.03,11.04,9.015,20]henicosa-1,3(11),4(9),5,7,12,15(20),16,18-nonaene-14,21-dione ?