N-(4-cyanophenyl)-N'-cyano-N''-(3,4-dihydro-3-hydroxy-6-((N,N-diisobutylamino)sulfonyl)-2,2-dimethyl-2H-1-benzopyran-4-yl)guanidine
n-(4-cyanophenyl)-n'-cyano-n''-(3,4-dihydro-3-hydroxy-6-((n,n-diisobutylamino)sulfonyl)-2,2-dimethyl-2h-1-benzopyran-4-yl)guanidine