A1JLF a1jlf 13-ethoxy-5-thiophen-2-yl-2,4$l^{3}-dioxa-6,7$l^{4}-diaza-3$l^{7}-vanadatricyclo[7.4.0.0^{3,7}]trideca-1(9),4,7,10,12-pentaene 3,3-dioxide A1JLF