Running out of formula!

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Ok so I have enough formula for one more bottle and it looks like I am going to run out in the middle of the night. I have another can but I went to open it and it has a dent on the bottom so I feel like I shouldn’t use it. Then I have a sample of similac (he drinks enfamil). It’s late and I’m not sure if any stores are opened that have formula. Can I use the similac or will that mess up his stomach? Or is the dented container safe to use???!