\chemfig{

\chemfig{
O% 7
=[:300.2,1.613]% 25
(
-[:240.2,1.613]% 30
(
-[:260.2]H% 57
)
(
-[:340.2]H% 58
)
-[:180.2,1.613]O% 8
-[:240.2]H% 63
)
-[:0.2,1.613]% 14
(
<:[:240.2,1.613]O% 3
-[:300.2]H% 51
)
-[:90,1.68]% 15
(
-[:109.7]H% 41
)
(
-[:189.9]H% 42
)
-[:29.6,1.68]% 13
(
<:[:89.3,1.613]O% 1
>:[:149.3,1.613]% 19
(
-[:29.3]H% 45
)
-[:209.3,1.613]O% 2
-[:149.3,1.613]% 23
(
<[:209.3,1.613]% 29
(
-[:209.3]H% 53
)
(
-[:299.3]H% 54
)
-[:119.3]H% 52
)
(
-[:269.3]H% 50
)
-[:89.3,1.613]% 22
(
-[:29.3,1.613]% 21
(
-[:329.3,1.613]% 20
(
-[:349.3]H% 46
)
(
-[:69.3]H% 47
)
-[:269.3,1.613]% -> 19
)
(
-[:149.3]H% 48
)
<[:89.3,1.613]N% 12
(
-[:149.3]H% 56
)
-[:29.3]H% 55
)
(
-[:209.3]H% 49
)
<[:149.3,1.613]O% 4
-[:209.3]H% 59
)
(
-[:149.5]H% 40
)
-[:329.1,1.68]% 17
-[:270,1.613]% 18
(
-[:210.9,1.68]% 16
(
-[:230.6]H% 43
)
(
-[:310.7]H% 44
)
-[:150.4,1.68]% -> 14
)
=^[:330,1.613]% 26
(
-[:270,1.613]O% 6
-[:210]H% 61
)
-[:30,1.613]% 28
=^[:90,1.613]% 27
(
-[:150,1.613]% 24
(
=^[:210,1.613]% -> 17
)
-[:90,1.613]O% 5
-[:30]H% 60
)
-[:30.9,1.68]% 31
(
=[:90.7,1.613]O% 9
)
-[:330.4,1.68]% 33
=^[:270,1.68]% 34
(
-[:209.6,1.68]% 32
(
-[:149.1,1.68]% -> 28
)
=[:269.3,1.613]O% 10
)
-[:329.1,1.75]% 36
(
-[:269.3]H% 62
)
=^[:29.6,1.75]% 38
(
-[:329.8]H% 65
)
-[:90,1.75]% 37
(
-[:30.2]H% 64
)
=^[:150.4,1.75]% 35
(
-[:210.9,1.75]% -> 33
)
-[:90.7,1.613]O% 11
-[:30.7,1.613]% 39
(
-[:300.7]H% 66
)
(
-[:30.7]H% 67
)
-[:120.7]H% 68
}