Why am I getting Invalid Syntax in Neural Network exercise?

I have all the necessary libraries and modules but I keep getting Invalid Syntax. See code below:

 from tensorflow.keras.layers import Dense
 # training the best tuned model
 # input the best parameters reported before
 tuned_model = tf.keras.Sequential([
     Input(X_train.shape[1]),
     Dense(units= 106, activation='relu'),
     Dropout(0.40197),
     Dense(units= 106, activation='relu'),
     Dropout(0.40197)
     Dense(units=10, activation='softmax')
 ])

 # input the best learning rate and decay 
 opt = tf.keras.optimizers.RMSprop(lr=0.00011, decay=0.00020)
 tuned_model.compile(loss='categorical_crossentropy', optimizer=opt, metrics=['accuracy',f1_m])

 # report the accuracy and f-measure using the test set as validation data 
 history_tuned = tuned_model.fit(X_train, y_train,  
                batch_size=16, epochs=100, 
                validation_data=(X_test, y_test), callbacks=[stop_early])

Output:

Input In [44]
    Dense(units=10, activation='softmax')
    ^
SyntaxError: invalid syntax