1824578 YC-1 guanylyl cyclase, 3-(5'-hydroxymethyl-2'-furyl)-1-benzyl indazole 2 1824579 YC-1 synthetic compound 1-benzyl-3-(5'-hydroxymethyl-2'-furyl) indazole 1 1824577 YC-1 synthetic compound 3-(5'-hydroxymethyl-2'-furyl)-1-benzylindazole 1