Madsiur listed it: C1/6898. You should know how to get to that if you've been hex editing a lot of things on your own. 
In your Hex editor search for '16898'. That's the linear offset.
I'm going to assume you know about taking the header into account, but just in case, if you don't see the A9CE there at C1/6898, your ROM has a header and you need to subtract 200 from that address.
All that 'C' is there for in the front is what bank it is in, no need to add that onto the search. To see the 'C' or whatever bank it may be while hex editing (D, or E, or F) you need to display the offset as SNES Hi-ROM. In Windhex it's: Option>Display Offset as>SNES Hi-ROM.
In your Hex editor search for '16898'. That's the linear offset.
I'm going to assume you know about taking the header into account, but just in case, if you don't see the A9CE there at C1/6898, your ROM has a header and you need to subtract 200 from that address.
All that 'C' is there for in the front is what bank it is in, no need to add that onto the search. To see the 'C' or whatever bank it may be while hex editing (D, or E, or F) you need to display the offset as SNES Hi-ROM. In Windhex it's: Option>Display Offset as>SNES Hi-ROM.
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