Having troubles creating table SQL

I'm new to SQL and Im trying to create a simple database, but I'm having problems with second one, I'm using Oracle Database express 11 and when I try to run this code I get error: Missing right parenthesis

CREATE table "CURSOS" (
    "Nombre_curso" VARCHAR2(20) UNIQUE,
    "Cod_curso"  VARCHAR2(10),
    "Apellido2"  VARCHAR2(15),
    "NIF_Prof"   VARCHAR2(9),
    "Max_al"     INT (2),
    "Fecha_ini"  DATE,
    "Fecha_fin"  DATE,
    "Horas"      INt(6) NOT NULL,
    constraint  "CURSOS_PK" primary key ("Cod_curso"),
    constraint  "CURSOS_CK" CHECK (Fecha_ini<Fecha_fin),
    constraint  "CURSOS_FK" FOREIGN KEY (Nif_Prof) REFERENCES PROFESORES,
)